Steppe Shoal
Land (Rare)

Steppe Shoal enters the battlefield tapped unless you control an enchantment.

1, Tap: Add WW, WU or UU to your mana pool. Steppe Shoal deals 1 damage to you.

1: Steppe Shoal becomes a 2/2 white Knight Spirit creature until end of turn. It's still a land.

Jason Moeller