Verdant Slagheap
Land (Rare)

Tap, Pay 1 life, Sacrifice Verdant Slagheap: Search your library for a Mountain or Forest card and put it onto the battlefield, then shuffle your library.

2G: Verdant Slagheap becomes a 2/2 red and green Leech Elf creature with trample until end of turn. It's still a land.

Allan Staples