Fire-Lit Cavern
Land-Swamp Mountain (Rare)

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

When Fire-Lit Cavern enters the battlefield, you lose 1 life unless you reveal a land card from your hand.

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

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

Lars Tedin