Slagheap Bosk
Land-Swamp Mountain (Rare)

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

When Slagheap Bosk enters the battlefield, sacrifice it unless you pay 3 life.

RR, Tap: Target creature gains haste until end of turn.

Tap, Sacrifice a Swamp: Add BB to your mana pool.

Aleksi Chan