Slagheap Delta
Land (Rare)

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

Tap: Add U or R to your mana pool.

Tap: Add 2 to your mana pool. Put Slagheap Delta on top of your library.

1: Slagheap Delta becomes a 2/2 red Troll creature until end of turn. It's still a land.

Eric Briclot