A burst of Holy energy fills the caster, reducing the mana cost of instant cast spells by 15% and increasing your movement speed by 10%.
You can only have Inner Will or Inner Fire active at a time.
We must act swiftly and decisively. — Suncaller Haruh (TCG)
Inner Will is a priest ability learned at level 80. It is a baseline priest self-buffs that increases movement speed and reduces the mana consumption of instant cast spells. It was first announced in the Cataclysm priest review and seen in-game with the release of World of Warcraft: Cataclysm. The effect lasts until cancelled or by switching to [Inner Fire] for its desired effect.