Give Gulbrandr’s Rage

Gain control of target creature until end of turn. Untap it. It gains haste until end of turn.
Lunaarian - If you cast this spell during your second main phase, each player sacrifices a creature.
Legend says that if two armies make a truce, and Morwyn wills it, then Gulbrandr will possess a chosen warrior and make the battle happen anyway by charging the enemy and attacking everyone in sight.