Swamp Coliseum
Land (Rare)

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

Tap: Add U or B to your mana pool.

Put Swamp Coliseum on top of your library: Add 1 to your mana pool.

Cycling UB (UB, Discard this card: Draw a card.)

Rebecca Pollack