Augury is a prayer that gives a player 8 bonus Magic levels when calculating hit chance, 8 bonus Defence levels when calculating block chance, and a 8% boost to magic damage dealt. It requires level 70 Prayer to use. Augury currently has the highest Prayer level required for any prayer in the default prayer book. Augury is unlocked by completing the Knight Waves training ground.
Considering the way in which it is unlocked, the boosts, and Prayer level required, this prayer is considered the Magic equivalent of the melee prayer Piety and the ranged prayer Rigour.