This addon adds in a Faerie, or Fey, race into ToME. This addon was originally created by Kaballah, but he hasn't been online in over a year.
Instead of letting it die (I mean, how could we not be able to play as a Faerie?) I decided to fork it over into a playable form.
I've taken it, modified it's values, and changed it's 4th talent.
You can nab it here.

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The Fey are an incredibly quick and agile race, however they are incredibly fragile.
You will have to make use of their blinding speed to survive encounters.
If you find yourself in trouble, you can spray some Fey Dust onto nearby enemies while you escape.

Fey stats:
-2 Strength, -5 Constitution, +3 Dexterity, +3 Cunning, +6 Luck,
Life per level: 7
Experience bonus: 5%
Unbreathing

Fey skills:

-Flight
--Passive
--The Fey are capable of flight.
--Avoid certain traps
--Grants bonus Movespeed and Defense, that scales with Dexterity or Magic
--Effect grows if health is low
--Pretty magical wings

-Fey Luck
--Passive
--The Fey are naturally lucky, and this aids them in many ways.
--Grants Luck and Saves
--If you take more than 10% of your life in damage, some of the damage is nullified, and you gain a shield of equal value.
--Scales with Luck
--Effect grows if health is low

-Fey Speed
--Active
--The Fey are always fleet-footed, and are ready to split upon a moment's notice
--Grants bonus Global Speed that scales with Dexterity or Magic
--Effect grows if health is low when activated
--Removes all Pinning effects

-Fey Dust
--Active
--The Fey's Dust, while pretty, turns out to not feel good when thrown into eyes
--Sprays a cone of Fey Dust, which deals damage that scales with Dexterity or Magic
--The spray also knocks back and blinds enemies hit
--It can also stun or confuse, if used at low health

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Dark Faeries are Faeries that have given up much of their natural agility and defense in exchange for bonus offensive potency.
They are extremely frail, even more so than their more agile counterparts, but make up for it with faster offense, higher damage, and many different tricks.
Despite all thoughts otherwise, they are still, mostly, a playful bunch to be around, if not a bit more painful in their method of invitation.

Dark Fey stats:
-3 Strength, -7 Constitution, +3 Dexterity, +3 Magic, +1 Cunning, +6 Luck,
Life per level: 5
Experience penalty: 5%
Unbreathing

Dark Fey skills:

-Powers of the Dark
--Passive
--The Dark Fey have sacrificed their Flight for additional offensive potency.
--Grants bonus Cast Speed and Combat Speed, that scales with Dexterity or Magic
--Grants bonus Damage that scales with Luck and Character Level
--Effect grows if health is low

-Fey Clone
--Passive
--The Dark Fey have given up some of their natural luckiness, but not all.
--Grants Luck and Saves
--Upon dealing damage, you summon a clone of yourself for a few turns.
--Has your entire talent list, deals 50% damage, and has 10% of your max life.

-Vision of the Shadows
--Active
--The Dark Faerie has lost it's ability to flee, and has been forced to find other methods of survival, in the form of dark magics.
--This talent shows all enemies within a moderate to large radius around yourself.
--Calls forth 3 shadows onto nearby enemies that are in sight.
--Shadows are extremely weak, but make for decent body-blockers.
--Vision Radius, Vision Duration, and Number of Shadow Targets increases with talent level.

-Feyd to Black
--Active
--Call forth the powers of darkness to overflow the battlefield, affecting all Actors in sight range.
--Increase all allies life by a percent of their Max Life. (Including yourself.)
--Decreases all foes life by a percent of their Max Life.
--Blind all foes, even those who cannot normally be blinded.
--This effect's power increases as your life decreases.
--This talent does not proc healing effects, and cannot lower enemies below 10% of their max health.

Many in Maj'Eyal have heard of "demons", sadistic creatures who appear seemingly from nowhere, leaving a trail of suffering and destruction whereever they go. Their Fearscape floats far above the skies, watching and waiting, but not idly; their agents scout the land, their legions build up their forces, and their scholars develop new spells and strategies. As the barrier between our worlds begins to crack under their scrutiny, helpless Eyalites have begun to disappear, whisked up to serve as their slaves and playthings. They imbue these victims with magical powers to better survive the ensuing stresses - can you use your new-found abilities to escape the legions of Mal'Rok?

Features:

• Start with a new class, the Doombringer! These avatars of demonic destruction charge into battle with massive two-handed weapons, cutting swaths of firey devastation through hordes of opponents. Armed with flame magic and demonic strength, they delight in fighting against overwhelming odds, softening up the crowd with waves of fire, then feeding on the flames and suffering of their surroundings to stay alive while quickly reducing any group to a pile of ash and gore.
• Unlock a new class, the Demonologist, with an all-new item enhancement mechanic! Bearing a shield and the magic of the Spellblaze itself, these melee-fighting casters can grow demonic seeds from their fallen enemies. Imbue these seeds onto your items to gain a wide array of new talents and passive benefits, and summon the demons within them to fight on your side! Ever looked at a gigantic demon-cursed minotaur and wished it was on your side for once? Well, now you CAN summon one to pound your foes into paste while you cast devastating spells from afar, or call forth a squad of Fire Imps to pelt your enemies to death while they exhaust themselves on your impenetrable defenses! Demons have persistent health, making them a little more precious than disposable necromancer skeletons or summoner beasts, but can be revived from death nonetheless.
• Two new zones, with all-new art, foes, and bosses! You've seen the plains of the Fearscape before, now see the lairs and headquarters of the demons themselves!
• Over 10,000 words of written lore to find! The demons were once an enlightened, peaceful race, hailing from a distant planet known as Mal'Rok; learn what drove them to plot Eyal's eternal torture! Discover monuments to each of the demonic species and noteworthy individuals, showing the place of honor each has among them! Get a glimpse into the culture and daily lives of these sadistic invaders and their brainwashed thralls!
• Unlock a new race, Doomelves: Shalore who've taken to the demonic alterations especially well, corrupting their typical abilities into a darker form. Blink away to safety, transform into a shadowy dúathedlen to hide in the shadows or prey on your foes with blasts of darkness, use your new resilience to soak up status effects and critical hits, and assault your enemies' minds to leave them unsteady in combat!
• Between the aforementioned classes and Doomelves, a whopping 75 new talents!
• Unlock two new cosmetic options! You know you've always wanted demon-horns.
• Two new events, appearing anywhere in Eyal!
• 20 new artifacts, with unique and interesting effects. Collect the Obsidian Treasures to amass more and more power! Slip your hands into the Will of Ul'Gruth and watch your sweeping blows smash down walls! Wear a giant hideous hell-mouth as a fashionable belt!
• 7 new achievements! Conquer the worst Urh'Rok's forces can throw at you, and hang their metaphorical skulls from your profile page!

Primary Features:
Two new Archmage style classes; Arcanist and Elementist.
One new Enchanter class.
Some extra talents for Alchemist.
Lots of new artifacts.
Artifact gems are more interesting to attach to golems.
Crystal Focus/Heart items can be deconstructed to recover the gem.
Angolwen Academy: Get training in the Arcane here.
3 new runes.
Two new item types with unique egos: Ritual Blades and Wardstones.

Arcanist Features:
Like Archmage, but also starts with temporal, meta and nightfall unlocked, and no elemental categories.
Has two unique categories; High magic and Void magic.
Can also unlock Illusion, Distortion, Power and Morph.

Elementist Features:
Like Archmage, but only elemental categories.
Has three unique categories; Elementalism, Corrupted Elements and Elemental Fusion.

Enchanter Features:
Apply a variety of enchantments to your equipment.
Dabble in safe and unsafe hedge magic.
Defeat monsters with your prowess with a staff.

Archmage Features:
1 new category containing 8 arcane/elemental combo spells.

Alchemist Features:
Altered Alchemists Guild quest.
Two new unique categories: Poison Alchemy and Metal Alchemy.
They also get access to Mana Alchemy and Herbalism.

An addon compiling various fixes to bugs in ToME4.

===== Bugs fixed by this addon =====

= Band of Protection =
Getting a Damage Shield or Psionic Damage Shield effect while Band of Protection's Steam Shield effect is active causes game-breaking errors. This addon fixes this and makes Steam Shield behave like the other two damage shield effects (gets overwritten by new damage shields).

= Quake hitting multiple times =
Quake performs knockback during projection, which can cause the same actor to be hit multiple times, depending on the order that squares are iterated over. This addon fixes Quake so that it can only hit each actor once.

= Proc bonuses/penalties with nested attacks =
Weapon attacks that happen during other weapon attacks (such as Flexible Combat and weapons with talents on hit or talents on crit) can result in proc damage bonuses from staves being applied to the wrong weapon's procs, and the proc penalty for ogres applying multiple times to a weapon's procs and failing to apply at all to other procs. This addon fixes this so that the proc bonus from staves/shields only applies to the staff/shield's procs, and so that the ogre proc penalty always applies once.

= Real-time Anomaly Meteors =
Actors can dodge meteors from Anomaly Meteor by moving out of the way within 1/6th of a second, real-time. This addon removes this real-time behaviour, making the game properly turn-based once again.

= Wild Speed, Step Up, etc. resource leak =
An engine bug causes timed effects like Wild Speed and Step Up (ones that stop when you use a talent or attack) to constantly increase the size of a table on the actor using them. On characters that use these talents heavily, this can bloat savegames. This addon fixes this bug.

= Snapshotting for many talents =
Many sustains and passives do not update their values after being activated, allowing you to "snapshot" values with high power and then continue to use those high values even after changing to e.g. equipment that gives less spellpower or mastery. This addon currently fixes snapshotting for the following talents:
- Abyssal Shield
- Acid Infusion
- Acidic Skin
- Acidic Soil
- Aim
- Antimagic Shield
- Arcane Feed
- Arcane Power
- Arcane Shield
- Augmentation
- Automated Cloak Tessellation
- Berserker
- Berserker Rage
- Blade Flurry
- Blood Fury
- Blur Sight
- Body of Fire
- Burning Wake
- Corrosive Nature
- Corrosive Slashes
- Crystalline Focus
- Dark Ritual
- Defensive Posture
- Deflect Projectiles
- Eldritch Infusion
- Elemental Harmony
- Essence of Speed
- Eternal Night
- Fiery Hands
- Flame Infusion
- Flame of Urh'Rok
- Forge Shield
- Frost Hands
- Frost Infusion
- Furnace
- Golden Age of Necromancy
- Gravity Locus
- Grim Shadow
- Grinding Shield
- Ice Core
- Infestation
- Keen Senses
- Lightning Infusion
- Living Lightning
- Lucid Dreamer
- Mitosis
- Molten Iron Blood
- Momentum
- Natural Acid
- Nature's Defiance
- Onslaught
- Overheat Saws
- Pace Yourself
- Precise Strikes
- Precision
- Psiblades
- Rapid Shot
- Reflective Skin
- Resilient Body
- Righteous Strength
- Rocket Boots
- Secrets of the Eternals
- Shadow Feed
- Shielding
- Shield Wall
- Shattering Impact
- Shock Hands
- Slow Motion
- Spellcraft
- Steam Powered Armour
- Stone Skin
- Striking Stance
- Tempest
- Tempest of Metal
- Total Thuggery
- Unstoppable Nature
- Uttercold
- Weapon of Light
- Weapon of Wrath
- Wildfire

Unfortunately, this is not all of the snapshottable talents in the game, but it's a start.
This addon also fixes the ability to snapshot tons of passives and sustains by using items with "Talent category bonus".

===== Compatibility =====
This addon overwrites the following functions:
- mod.class.Actor's removeModifierList
- Anomaly Meteor's action
- Aim's activate
- Aim's deactivate
- Antimagic Shield's on_damage
- Arcane Power's activate
- Blood Fury's activate
- Blood Fury's deactivate
- Blur Sight's activate
- Blur Sight's deactivate
- Defensive Posture's activate
- Defensive Posture's deactivate
- Keen Senses's activate
- Keen Senses's deactivate
- Precise Strikes's activate
- Precise Strikes's deactivate
- Quake's action
- Stone Skin's activate
- Stone Skin's deactivate

It should otherwise not be destructive.

===== Changelog =====
1.2.2:
- Updated for ToME version 1.7.3; removed fixes that are no longer needed (Reckless Strike)

1.2.1:
- Updated for ToME version 1.7.2; fixed Spellcraft

1.2.0:
- Updated for ToME version 1.7.0; removed fixes that are no longer needed
- Fixed snapshotting for Eternal Night, Golden Age of Necromancy, Grim Shadow, and Pace Yourself
- Disabled Body of Stone snapshotting fix, due to it being unclear how the talent is intended to behave

1.1.9:
- Now works with Infinite Dungeon again
- Fixed Quake being able to hit the same target multiple times
- Fixed Form and Function not affecting weapon damage

1.1.8:
- Bug fix: the new implementations of Blood Fury and Keen Senses now work with Arcane Might
- Fixed Band of Protection causing errors and havoc if a talent granting a regular damage shield or psionic damage shield (such as Improved Gestalt) is used while it is active.
- Fixed ActorTemporaryEffects:removeEffect() failing to remove effect list entries from the actor; this fixes useless crap piling up in your savegame when you (and NPCs) use movement infusions and similar effects.
- Fixed Gardanion's prodigy point being stolen by the Sher-Tul High Priest putting it on
- Fixed proc bonuses/penalties with nested attacks

1.1.7:
- Fixed yet another Eyal's Will snapshotting bug

1.1.6:
- Fixed cloneCustom() breaking Corpathus and Wintertide (see http://forums.te4.org/viewtopic.php?f=42&t=50960 )
- Fixed Annihilator's flamethrower talents causing an error when used with double weapons such as The Long-Arm
- Made Psychic Crush work more like Forgery of Haze/Shadow Simulacrum/etc., only removing remove_on_clone timed effects and such. This fixes various issues with timed effects like Mucus and Corrosive Worm.

1.1.5:
- Fixed Eyal's Will Psiblades error

1.1.4:
- Generalized Possess aura/shield fix for other talents and timed effects

1.1.3:
- Fixed possessing creatures with Mindslayer auras and shields

1.1.2:
- Fixed 1.6 Possessor resource leaks and performance regressions
- Fixed Meteoric Crash mind crits

1.1.1:
- Fixed Godfeaster fix

1.1.0:
- This version is not compatible with savegames from older versions!
- Updated all bug fixes for ToME4 version 1.6.7
- Added a warning popup if addon version doesn't match ToME4 version
- Fixed Fearscape and Godfeaster boss death portals
- Fixed Tentacled Wings hitting multiple times
- Fixed Hammer Toss serialization
- Fixed Lock On working on out-of-range and out-of-sight targets
- Fixed "of mastery" and "of perfection" amulet egos from overwriting existing mastery
- No longer fixes early equilibrium failures for targeted talents (too destructive to compatibility). Sorry.
- No longer alters talents that had their bugs fixed in mainline ToME4: Bone Shield, Overkill, Willful Tormenter, Wing Buffet knockback
- Abyssal Shield melee retaliation restored (and no longer snapshottable)
- Flame of Urh'Rok original resistance formula restored (and no longer shapshottable)
- on_mastery_change functions added by other addons will no longer be stomped
- All original talent function environments are now preserved (improves compatibility with other addons)
- Fixed Reckless Strike so that it actually ignores resistances (instead of just giving 70% penetration)
- Restored Reckless Strike's "25% of damage dealt" alternative backlash, but made this amount of backlash damage actually correct (in mainline ToME4 it almost always inflicts less backlash than it should)
- Fixed snapshotting for more talents: Acid Infusion, Acidic Skin, Acidic Soil, Arcane Feed, Arcane Power, Arcane Shield, Augmentation, Automated Cloak Tessellation, Berserker, Berserker Rage, Blur Sight, Body of Fire, Body of Stone, Burning Wake, Corrosive Nature, Crystalline Focus, Deflect Projectiles, Eldritch Infusion, Elemental Harmony, Essence of Speed, Fiery Hands, Flame Infusion, Forge Shield, Frost Hands, Frost Infusion, Frostdusk, Furnace, Gravity Locus, Grinding Shield, Ice Core, Keen Senses, Lightning Infusion, Living Lightning, Lucid Dreamer, Mitosis, Molten Iron Blood, Momentum, Natural Acid, Nature's Defiance, Onslaught, Pace Yourself, Phantasmal Shield, Precision, Psiblades, Rapid Shot, Reflective Skin, Resilient Body, Righteous Strength, Rocket Boots, Secrets of the Eternals, Shadow Feed, Shattering Impact, Shielding, Shield Wall, Shock Hands, Slow Motion, Spellcraft, Steam Powered Armour, Stone Skin, Tempest, Tempest of Metal, Total Thuggery, Unstoppable Nature, Uttercold, Weapon of Light, Weapon of Wrath, Wildfire
- Fixed snapshotting via talents_mastery_bonus (e.g. the Radiance artifact cloak, the Adept prodigy)

1.0.6:
- Fixed sustainbug for Aim, Antimagic Shield, Striking Stance
- Fixed Antimagic Shield's retaliation
- Fixed Blast and Wing Buffet hitting multiple times
- Preserved original fenv for more replaced functions, to reduce the chances of addon conflicts

1.0.5:
- Gave the Spider talent's action its original fenv back (fixes some artifacts)

1.0.4:
- Remove Catalepsy fix as it is fixed in vanilla in 1.5.8

1.0.3:
- Fixed Catalepsy

1.0.2:
- Fixed equilibrium failure happening before targeting instead of after.

1.0.1:
- Shifted to a generalized bugfix addon instead of just "Meteor Fix".
- Fixed sustainbug for Abyssal Shield, Blood Fury, Bone Shield, Corrosive Slashes, Dark Ritual, Defensive Posture, Flame of Urh'Rok, Infestation, Overkill, Precise Strikes, Willful Tormenter
- Fixed Reckless Strike self-kills
- Fixed Reckless Strike damage shield interaction
- Reckless Strike now always damages you for 30% of your current HP after the attack
- Overkill now correctly attributes its damage to the talent
- Overkill now ignores the source's inc_damage instead of the victim's
- Overkill now projects its damage in an onTickEnd()
- Overkill no longer has an overzealous recursion guard, just a regular recursion guard

1.0.0:
- Initial release

Weight: 61428967

One year has passed since the one the Orcs call the "Scourge from the West" came and single-handedly crushed the Orc Prides of Grushnak, Vor, Gorbat, and Rak'Shor.  The Allied Kingdoms, now linked by farportal to their distant, long-lost Sunwall allies, have helped them conquer most of Var'Eyal.  The few remnants of the ravaged Prides are caged...  but one Pride remains.  Kruk Pride, isolated on an island, is the last orcish settlement that stands; they, too, face their impending doom.  The Sunwall has blockaded the only exit point from the island, and now, the technologically advanced civilization of Steam Giants have come down from the mountains to take their homeland with machines and weaponry unlike anything else on Eyal.  Kruk Pride has reverse-engineered their technology before; their only hope is to do it again and rise up against the Pride's foes.
 

Features:

• Explore a whole new campaign from level 1 to 50, one year after the events of the original Tales of Maj'Eyal campaign. Liberate the Orcs (or die trying) by rising up against the Sunwall, the Steam Giants of Atmos, and other dangers that may lie in wait...
• Play as one of three new races: the battle-hardened Orcs, the brutal Yetis, and the unstoppable Whitehooves. Discover their stories, their pains, their hopes... and their awesome racial powers!
• Risk your life in over 20 unique zones! Explore the ruins of a lost city, lay siege to the Sunwall forces at the Gates of Morning, and raid the Steam Giants' mining quarry - each has its own unique foes and hazards, leading each to feel and play different from the others.
• Play as one of the four new tinker classes: Gunslingers, Sawbutchers, Psyshots and Annihilators! Plus a class evolution: Technomancers! Crush and rend your foes with heavy metal, electrocute and immolate them with your gadgets, charge across the battlefield or nimbly strafe in style - each plays differently, and none provide any shortage of ways to slay your foes.
• Master steam technology to build powerful tinkers to augment your equipment. Need to close in a bit quicker? Turn your boots into rocket boots! Having a hard time deciding whether to shoot someone or stab them? Build a Hand Cannon into your gloves, or deploy a Weapon Automaton to do the stabbing for you! If you have a problem, steamtech has a solution, usually involving explosions; with over 80 different powerful contraptions to craft, enjoy unparalleled versatility and trying something different with every playthrough.
• Master the tactical uses of over 140 talents! Fire bouncing trick-shots and psychic-infused shots, use your steamsaws as shields or wheels, terrify your foes with long mechanical arms - there are no "boring" talents here, everything has its own special applications and properties!
• Use advanced technology in the world of Eyal! Burrow through sand, plant bombs to destroy tunnels, and discover that you aren't alone in using it...
• Infusions and runes are for puny humans; implant new medical injectors to pump an array of experimental chemicals into your body! Injectors can use any (infinitely reusable) salve in your inventory as long as they're off their cooldown, giving you versatility you've wished you could get with a couple of inscriptions.
• Loot over 70 new and powerful artifacts. Pump lead into foes with big guns, quick guns, and explosive guns! Shred them with saws that maim, saws that thirst for blood, and saws that aren't really saws! Violate common sense by strapping a rocket to your back and calling it a jetpack!
• Enjoy dying in horrible and exotic ways at the hands (or claws, jaws, guns...) of over 140 new creatures! Not mere piles of stats and chain-stuns, these foes will provide unique challenges - suffer the Sunwall's newest cosmic spells, the new breeds of ritches that infest and multiply, the Steam Giants' elaborate defense systems, and find new strategies to adapt to each!
• Earn a trunkload of achievements! Have your accomplishments recognized for liberating the Orcish people, displaying exceptional mercy or cruelty, or showing your prowess with impressive feats! Give a boss a fate worse than death, show Sunwall forces how frustrating it is to fight a Radiant Horror as a paladin, come out on top against impossible odds, display a suicidal lack of situational awareness, and wear a badge of pride or shame for each!
• Read roughly 27,000 words of new lore to immerse yourself in the world! Learn how things have changed since the Scourge's campaign, feel hatred and/or pity for your foes, uncover grand schemes and sinister plots, and notice the elaborate connections between Var'Eyal's numerous factions. Every zone has a story behind it, and every story ties into a bigger picture; enjoy a tale of horror and humor, of intrigue and glory, of despair and hope.
• Earn the right to use the classic (and Ashes of Urh'Rok) classes in Embers of Rage, and the new tinker classes in Maj'Eyal! Play a Brawler in the East to fulfill your life-long dream of suplexing an entire nation of giants, or play a Sawbutcher in Maj'Eyal to shred through Dreadfell in a whirlwind of sawblades and steam!

Adds the White Monk, a warrior subclass.

The White Monk wields no arms, instead using intense focus and training to turn their body into a weapon. They fend off enemy blows with their immense willpower and can preform healing and regenerative rites. Primary stats are Dexterity and Willpower. White Monks have the unique ability to project unarmed melee attacks at a distance, with talents that allow them to strike many targets in a area, as well. White Monks have a base damage modifier for hand gear of 60% Dex and 60% Wil, and gain some of the same benefits to unarmed attacks as Brawlers.

Includes seven new talent trees and incorporates a few existing trees from Warrior and Rogue classes.

Rending - Attack your foes from afar and sap their energy.

Mending - Heal and cleanse yourself and even prepare a rite that can ward off death itself.

Fending (generic) - Ward off enemy assaults, directing some damage to your stamina pool.

Agile Combatant - Move across the battlefield with unmatched agility.

Martial Arts - Master the art of unarmed fighting and gain bonus strikes from your attacks.

Black Belt (locked) - Learn advanced fighting techniques to cripple your foes and react with finely honed reflexes.

Transcending(locked) - Directly manipulate your foes' spirits to sap their energy and learn to project your spirit to assail all nearby foes.

Follow one of the Six Ways with a set of class evolutions for the White Monk:

Way of the Rushing Bull

Way of the Flying Arrow

Way of the Open Palm

Way of the Arcane Flow

Way of the Transcendent Spirit

Way of the Hidden Viper

Full details in the forum thread.