Feast of Corruption

Elite Spell. Target foe and all adjacent foes are struck for 16...67...80 shadow damage. You steal up to 8...34...40 Health from each struck foe who is suffering from a hex.

Elite Spell. Deals 16...67...80 damage to target and adjacent foes. Steal 8...34...40 Health from each hexed foe.

Progression
Curses Shadow damage Life stealing	0 16 8 1 20 10 2 25 12 3 29 14 4 33 17 5 37 19 6 42 21 7 46 23 8 50 25 9 54 27 10 59 29 11 63 31 12 67 34 13 71 36 14 76 38 15 80 40 16 84 42 17 89 44 18 93 46 19 97 49 20 101 51 21 106 53

[edit] Acquisition

Consider combining with hex spells that hexes foes in an area of effect, such as Reckless Haste or Suffering.
If your target dies while you are casting Feast of Corruption, the spell will not fail.
You cannot capture this skill from four prominent foes that use it:
- Rotscale, Selvetarm, and Fendi Nin are boss-like foes; you can only capture skills from bosses.
- The death of the Inscribed Guardian at the end of Finding the Bloodstone triggers a cinematic, leaving no time to capture the skill.

The Guild Wars 2 Wiki also has an article on Feast of Corruption.