Restless Reef [The Lost Caverns of Ixalan Prerelease Cards]

Set: The Lost Caverns of Ixalan Prerelease Cards Type: Land Rarity: Rare Restless Reef enters the battlefield tapped. T: Add U or B. 2UB: Until end of turn, Restless Reef becomes a 4/4 blue and black Shark creature with deathtouch. It's still a land. Whenever Restless Reef attacks, target player mills four cards.