Deadwood Snag

As long as Deadwood Snag isn't on the battlefield,
it's a Forest in addition to its other types.
Deadwood Snag enters the battlefield tapped
unless there is a Forest card in your graveyard.
When Deadwood Snag enters the battlefield, you
may pay {3}. If you do, create a 1/1 colourless
Plant Bird creature token with flying.
{t}: Add {c}.