Staggering Palace

{t}: Add {w} or {g} to your mana pool
Landfall - Whenever a land enters the battlefield under your control, you may pay {w}{g}{2}. If you do, Staggering Palace becomes a 4/4 turtle with menace. It's still a land.
"It's a great spot for a castle. Great view, but the beast tends to, get carried away..." - Earl Emmington