When Copperline Bosk enters the battlefield, you lose 2 life unless you reveal a colorless card from your hand.

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

: Add  to your mana pool.

: Copperline Bosk becomes a 2/2 black and green Bear creature with trample until end of turn. It's still a land.