Part of the Confessor's Raiment set:

The set gives these bonuses as more pieces are worn: 2: Increases healing done by spells and effects by up to 22. 3: Increase the range of your Smite and Holy Fire spells by 5 yds. 5: Reduces the casting time of your Mind Control spell by 0.5 sec. Set Details | All Sets

Quest Reward from:

Level	Name	Start	Rewards
60	Paragons of Power: The Confessor's Mantle  (Raid) Horde and Alliance Zul'Gurub	Al'tabim the All-Seeing Stranglethorn Vale	6600 XP