Insidious Parasite

Hex Spell. For 5...13...15 seconds, whenever target foe hits with an attack, you steal up to 15...39...45 Health from that foe.

Hex Spell. (5...13...15 seconds.) Steal 15...39...45 Health whenever target foe hits with an attack.

Progression
Curses Duration Life stealing	0 5 15 1 6 17 2 6 19 3 7 21 4 8 23 5 8 25 6 9 27 7 10 29 8 10 31 9 11 33 10 12 35 11 12 37 12 13 39 13 14 41 14 14 43 15 15 45 16 16 47 17 16 49 18 17 51 19 18 53 20 18 55 21 19 57

[edit] Acquisition

This skill works well against attack skills that deal multiple attacks, such as Sun and Moon Slash and Barrage, because it steals health for every hit.
The life steal happens before the damage from the attack is received.
This hex will end on the target if the caster dies.

This skill has changed since its introduction; see its skill history for details.