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.

Features:
Cunning/Dead Secrets - generic category available to Necromancer, Doomed and Shadowblade.
Grave Resolve: passive. Bonus to Fear immunity and Mental save.
Darktouched: active. Small resistance bonus against darkness, cold, undead. + touch attack Heals undead/harms others.
Dead Whispers: active. Grants telepathy Undead for a short time. Also let's you see what your minions see.
Necroanatomy: passive. You do increased damage to undead. Decreased damage you do to your own minions. Adds healing to Surge of Undeath. Increases max life of Doomed Shadows.

Spell/Charnel - class category available to Necromancer only.
Blood Burst: radius 1 blight damage ranged burst, splash heals undead.
Grasping Claws: mass pin/bleed.
Meat Shield: sustain, grants a physical ward on kill.
Vampiric Gift: moved from Spell/Grave

Tweaked Categories:
Spell/Grave
Chill of the Tomb: no change
Will o' the Wisps: Also buffs your cold damage and resistance a little. Grants a chance to summon a wisp on spell hitting.
Frozen Flames: Slowly burns status effects from friendly and enemies. Selective about whether it burns beneficial or detrimental.
Ghost Touch: Curse, lowers mindsave, cold resist and stun resist.

Spell/Advanced Necrotic Minions
Undead Explosion: If used on a Wisp, it will be a radius 1 freeze. If used on a Bone Giant it will provide the Bone Shield and do physical damage.
Soulwind: Increases minion's movement speed and grants a chance to recover a soul when a minion dies.
Assemble: Better level scaling.
Minion Mastery: Added a Greater Mummy that upgrades on Ghoul King. Also protects your minions from interminion damage.

Spell/Necrotic Minions
Aura Mastery move to Necrosis.
Undeath Link moved to slot 2, now does less damage to your minions, but also adds all minions life drains together.

Spell/Necrosis
Undeath Link moved to Necrotic Minions.
Impending Doom moved the slot 3.
Aura Mastery added to slot 2.

Spell/Shades
Shadow Tunnel now also includes the effect of Curse of the Meek.
Curse of the Meek removed.
Nether Breach added to slot 2. Its like Aether Breach but does darkness damage and won't hurt minions with Invoke Darkness 5.

Tweaked the talent levels granted by Blighted Summoning.

Also adds in a new class called the Spiritmancer:

The dead do not always rest easy, even free from fell influences.
Some linger, wishing to finish some unfinished business.
Others want to pass on a message to a loved one.
Some seek another chance for glory in battle or revenge against those who killed them.
They all eventually find a Spiritmancer, and bargain temporary servitude for closure.
The Spiritmancer can give form to the lost souls, allowing them to fight again. They also have powerful light and lightning magic.

Categories:
Spirit
Ghost Light: active. Summons Wisps of light. Melee light damage.
Spirit Guide. sustain. each summon you control increases your defense and saves.
Rest In Peace: active. bolt does light damage. more vs undead. becomes a beam at 5.
Spirit Form: active. can walk through walls temporarily. Light affinity.

Karma
Sprites: active. Summons Wisps of lightning. Ranged zappers.
Jolt of Fate: active. Lighting hits a random visible enemy.
Karmic Shield: active. Absorbs damage for a few turns then explodes based on damage absorbed.
Karmic Wave: active. weakish lightning damage cone. stronger when you are low on health.

Life Giver
Clay Golem: active. imbue a clay golem with the soul of a fallen warrior. Golem grants a physical resistance aura.
Poltergeist: sustain. randomly inflicts disarm or knockback against nearby enemies.
Gift of Life: active. give part of your life to your summons, healing them and making them tougher.
Hope: sustain. reduces debuff durations, increases fear resist.

Ghosts
Ghost Bulwark: active. summons a ghostly bulwark which can block attacks against adjacent allies.
Pale Veil: passive. allows your ghosts to Fade.
Ghost Berserker: active. summons a ghostly berserker. Choppy ghost.
Banshee: active. summon a banshee. Caster ghost.

Dawn
Shining Binds: active. ranged explosion for light damage and pin.
Pool of Light: active. Ground effect. Heals friendly. Lightblind enemies.
Holy Word: active. All nearby enemy undead/demons/horrors take light/arcane damage and are deafened.
Endless Light: sustain. increases light damage, light penentration and decreases spell cooldowns.

Justice
Lightning Flash: active. Throws a ball of lightning that explodes for lightning and blindness.
Peacemakers: active. Increases your summoned creatures strengths and speeds.
Indignation: active. Inscribe a symbol of justice on the ground. After a short delay it explodes with high lightning daze damage.
Righteous Fury: Lightning Mastery that also adds lightning damage to minion attacks.

Adds a new game menu option "Show known Landmarks", which presents a list of landmarks (up/down stairs, golden chests, zone entrances and the like) that you've seen on the current level and allows you to go to them or view them on the map.  You can also set your own landmarks for later reference by right-clicking on the map and choosing "Set landmark".

Also available as part of the ZOmnibus Addon Pack and ZOmnibus Lite.