All enemies within 4m of the target point lose a large portion of their current HP. After a 3s delay, the targets gradually regenerate the damage during a period of 5s (unless you kill them first).
Skill Ranks
Targets temporarily lose 35% of their current HP (56 mana)
Targets temporarily lose 39% of their current HP (64 mana)
Targets temporarily lose 43% of their current HP (72 mana)
Targets temporarily lose 46% of their current HP (80 mana)
Targets temporarily lose 49% of their current HP (88 mana)
Targets temporarily lose 52% of their current HP (96 mana)
Targets temporarily lose 54% of their current HP (104 mana)
Targets temporarily lose 56% of their current HP (112 mana)
Targets temporarily lose 58% of their current HP (120 mana)
Targets temporarily lose 60% of their current HP (128 mana)
Skill Masteries
Dream Mastery: The cooldown is reduced by 2s. Requires Rank 5.
Paralyzing Nightmare: Targets are also stunned for 1s. Requires Rank 10.
Skill Powerups
Lingering Nightmare: The damage regeneration starts 2s later.
Mass Nightmare: The area of effect is increased by 1m.
Tormenting Nightmare: Targets are also struck by 20% vulnerability.