Hallowed Pools
Land (Rare)

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

When Hallowed Pools enters the battlefield, put a land you control on the bottom of its owner's library.

Tap: Add WU to your mana pool.

Tap: Prevent the next 1 damage that would be dealt to target creature this turn.

Ron Argyle