Tranquillity IV is an active skill in AION Classic 5.0. The Cleric learns it from level 51. It casts in 0.5 s and recharges in 90 s.

Learned by

Class	Faction	Character level	Skill level
ClericLearned automatically	Both factions	51–59	1–9
ClericLearned automatically	Both factions	71–75	10–14

Taught by

Item	Skill level
Tranquillity IVCleric (Skill Book)
[Event] Tranquillity IVCleric (Skill Book)