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

, Pay 1 life: Add  or to your mana pool.

, , Sacrifice Tranquil Crypt: Draw a card.

: Tranquil Crypt becomes a 2/2 black Skeleton creature until end of turn. It's still a land.