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.

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.

Gives Adventurers 3 more Category Points at creation, from 7 to 10.
Update V1.2: Adventurers now have access to (Locked, at 1.0 Mastery):
- All Skirmisher categories (Including Technique/Tireless Combatant)
- All Stone Warden categories
- Generic category Cursed/Cursed Aura

Credit for the original code goes to SirSlush.

Is more generous with talents, types and stat points for each level gained.
Birth stats remain unchanged.
5 stat points per level, up 2 from 2.
2 talent points per level ( 3 if a multiple of 5 ), 1 ( 2 ) up from 1 ( 2 ).
2 generic points per level ( 1 if a multiple of 5 ), 1 ( 1 ) up from 1 ( 0 ).
4(!) category points per instance at levels 10, 20 and 36 ( and for every 30 levels after if that's a thing ), up 3 from 1.
2 prodigies at levels 30 and 42 ( up from 1 ). Additionally, +1 prodigies every 50 levels ( so 5 total at 50, and 1 more every 50 levels thereafter ).