At the beginning of your upkeep, Overgrown Megaliths deals 1 damage to target creature you control. : 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 Mountain. : Overgrown Megaliths becomes a 2/2 red Elemental creature until end of turn. It's still a land.