Enfeeble
Greatly reduces an enemy unit's ability to participate in combat. Reduces its damage and life regeneration. Lasts 20 seconds.
Level 1 - Reduces attack damage by 20% and life regeneration by 1 hit point per second.
Level 2 - Reduces attack damage by 40% and life regeneration by 2 hit points per second.
Level 3 - Reduces attack damage by 60% and life regeneration by 3 hit points per second.
Level 4 - Reduces attack damage by 80% and life regeneration by 4 hit points per second.

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Brain Sap
Feasts on the vital energies of another unit, absorbing some of its hit points.
Level 1 - Absorbs 75 hit points.
Level 2 - Absorbs 150 hit points.
Level 3 - Absorbs 225 hit points.
Level 4 - Absorbs 300 hit points.

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Nightmare
Puts another unit into a fitful slumber, filled with horrifying nightmares. It takes 20 damage per second. If that unit is attacked while it slumbers, the attacking unit comes under the effect of Nightmare.
Level 1 - Lasts 4 seconds.
Level 2 - Lasts 5 seconds.
Level 3 - Lasts 6 seconds.
Level 4 - Lasts 7 seconds.

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Fiend's Grip
Uses dark magic to grip a target enemy unit and damage it heavily. It cannot move or attack. Lasts 5 seconds.
Level 1 - Deals 100 damage per second, costs 40 mana and hit points per second.
Level 2 - Deals 155 damage per second, costs 60 mana and hit points per second.
Level 3 - Deals 215 damage per second, costs 80 mana and hit points per second.

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