Apply Poison I is a toggle skill in AION Classic 5.0. The Assassin learns it from level 13.

Learned by

Class	Faction	Character level	Skill level
AssassinLearned automatically	Both factions	13	1
AssassinLearned automatically	Both factions	17–24	2–9
AssassinLearned automatically	Both factions	71–75	10–14

Taught by

Item	Skill level
Apply Poison IAssassin (Skill Book)
[Event] Apply Poison IAssassin (Skill Book)