Elfhame Ridge
Land (Rare)

Elfhame Ridge enters the battlefield tapped unless you control five or more nonbasic lands.

1, Tap: Add GG, GR or RR to your mana pool. Elfhame Ridge deals 1 damage to you.

2G: Elfhame Ridge becomes a 2/2 red and green Bear creature with trample until end of turn. It's still a land.

James Moeller