Watery Necropolis
Land (Rare)

Watery Necropolis enters the battlefield tapped.

1, Tap: Add UU, UR or RR to your mana pool. Watery Necropolis deals 1 damage to you.

1: Watery Necropolis becomes a 2/2 blue Merfolk creature until end of turn. It's still a land.

James Palck