Rot Sea
Land (Rare)

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

Tap: Add U or B to your mana pool.

Tap: Add 2 to your mana pool. Put Rot Sea on top of your library.

When Rot Sea enters the battlefield, put a -1/-1 counter on target land.

Rebecca Schuler