Bulwark Ox [Aetherdrift Prerelease Promos]Set: Aetherdrift Prerelease Promos Type: Creature Ox Mount Rarity: Rare Cost: {1}{W} Whenever this creature attacks while saddled, put a +1 +1 counter on target creature. Sacrifice this creature: Creatures you control with counters on them gain hexproof and indestructible until end of turn. Saddle 1 (Tap any number of other creatures you control with total power 1 or more: This Mount becomes saddled until end of turn. Saddle only as a sorcery.)