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!

Stoics are warriors who dedicate their lives to mastering countless secret techniques.
Their wide variety of abilities allows them to fight their way out of any situation.
However, in order to fight at full effectiveness, they must first focus and steel themselves against the battle to come. Exceptionally skilled Stoics are said to infuse their attacks with elemental powers to create radical new fighting styles.

Stoics are a warrior subclass inspired by the Samurai class from Hengband. They are a melee class with a wide variety of specialized combat techniques, but require judicious use of their unique Focus resource to succeed. Their advanced trees allow them to alter the element of their attacks and grant passive effects as long as the stance is maintained.

Power comes at a price, but the price is worth paying...

This addon adds more Taints to the game.

Taints are Inscriptions powered by corrupt forces. As such, they are arcane so Oozemancers and other Zigur Zealots need not apply.
They do not get egos for scaling, instead they scale on a new stat called Taintmarks.
Taintmarks are a measure of how tainted by corrupted forces you are.
Each Taintmark increases the power and duration of Taints by 20%, but decrease you luck by 1 and increase the cooldown on nature gifts by 1.
Taintmarks are gained in many ways:
Each inscribed Taint grants a Taintmark.
Possessing a corrupt power source like Vim or Hate grants a Taintmark.
Being Undead, becoming Undead or changing your shape grants a Taintmark.
Giving in to your Hate grants a Taintmark.
Having Dark Ritual, Ruin or Blurred Mortality grant a Taintmark.
Having Blighted Summoning, Corrupted Shell, Bloodspring or Legacy of the Naloren grant a Taintmark.

Taintmarks are listed on your character sheet under stats.

Current Taints are only a little more rare than normal inscriptions. In v1 they will be much rarer but certain bosses will have a guaranteed Taint drop.

List of Taints:
Devourer: As before but also eats on of your own sustains for more healing.
Telepathy: As before but both effects have the same duration.
Darkness: Darkens the area, grants a temporary stealth boost and makes you activate stealth mode (even if you don't have it), but decreases your darkness resistance.
Vampire: Adds Life Leech chance and amount, but decreases your light resistance.
Blood Magic: Increases your Spellpower and lets you cast with life instead of mana/vim when needed, but decreases your physical save.
Reaper: Increases you physical power and restores resources on kills, but decreases your spell save.
Inversion: Grants damage affinity all, but changes some of your damage to healing.
Shade: Allows you to walk through walls and grants evasion, but reduces your healing.
Ghoulish Rot: Your hits apply Ghoulish Rot disease but your movement speed is decreased. Also blocks hits from being above a certain amount.
Banshee: Scream doing mind damage and causing confusion in nearby enemies, but silences you.
Bone Thorns: Sharp thorns sprout from your bones causing heavy bleeding damage to enemy attackers, but also causes you to bleed. Also increases armour and hardiness.
Blood Snare: Hurl a blood bomb at the target where it explodes, doing blight damage and pinning enemies. This blood bomb is made from your own blood.
Acceleration: Reduces cooldowns, but then they are on cooldown for longer when used.
Exchange: Removes debuffs from you then inflicts you with another random debuff.

Adds several new gem types and attempts to fill in some gaps in Tiered gem colors; also adds the Crystal race.

This is a continuation of jayseesee's original addon. It's my hope that the gems in this release are balanced, consistent across tiers, and useful to a variety of different characters.

Also hopefully all the Crystal's balance issues have been worked out: it should be an interesting tactical challenge to make best use of its unique mobility, find the right time to exploit its Runic Saturation status clear Stasis talent, and optimal self-imbued gemstone for each dungeon.

As always, please let me know if you find any issues in terms of bugs, game mechanics, or interface!