At the beginning of your end step, if you didn't cast any spells this turn, Overgrown Catacomb deals 1 damage to you. : Add  to your mana pool. Activate this ability only if you control a Forest. : Add  to your mana pool. Activate this ability only if you control a Swamp. : Overgrown Catacomb becomes a 2/2 black and green Elf creature with trample until end of turn. It's still a land.