Sunken Wastes
Land (Rare)

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

Tap: Add U or B to your mana pool.

Put Sunken Wastes on top of your library: Add 1 to your mana pool.

1: Sunken Wastes becomes a 2/2 black Wizard creature until end of turn. It's still a land.

Greg Chippy