Xal'atath's Bargain: Voidbound

The Void Emissary casts a dark prayer. When the cast completes, nearby creatures are granted $@spellname1221061, increasing their damage done by up to 50% and reducing their damage taken by up to 100% for 20 sec based on the amount of the Void Emissary's shield that remains.

Defeating the Void Emissary empowers players, granting them 20% Versatility and 30% spell and ability cooldown rate for 30 sec.