Rootbound Caves
Land (Rare)

At the beginning of your upkeep, Rootbound Caves deals 2 damage to target creature you control.

When Rootbound Caves enters the battlefield, put a land you control on the bottom of its owner's library.

Tap: Add BG to your mana pool.

2: Rootbound Caves becomes a 2/2 green Elf Treefolk creature until end of turn. It's still a land.

Greg Avon