At the beginning of your end step, if you didn't cast any spells this turn, Obsidian Bluffs deals 1 damage to you.

: Add  to your mana pool.

: Add  or to your mana pool. Each opponent gains 1 life.

: Obsidian Bluffs becomes a 2/1 black and red Cleric Rogue creature until end of turn. It's still a land.