Mystic Foothills
Land-Island Mountain (Rare)

(Tap: Add U or R to your mana pool.)

When Mystic Foothills enters the battlefield, sacrifice it unless you pay 1 life.

2, Tap: Target land becomes a 3/3 blue Crab creature until end of turn. It's still a land.

R, Tap: Target red creature gets +1/+0 until end of turn.

Eric Deschamps