Counter-attack I is an active skill in AION Classic 5.0. The Assassin and the Ranger learn it from level 1. It recharges in 10 s.

Learned by

Class	Faction	Character level	Skill level
AssassinRangerLearned automatically	Both factions	1	1
AssassinRangerLearned automatically	Both factions	3–6	2–5
AssassinRangerLearned automatically	Both factions	10–13	6–9
AssassinRangerLearned automatically	Both factions	71–75	10–14

Taught by

Item	Skill level
Counter-attack IUniversal (Skill Book)
[Event] Counter-attack IUniversal (Skill Book)