Island Turtle Chia-Wei Hsu

When Island Turtle Chia-Wei Hsu enters the battlefield, you may exile target permanent an opponent controls until Island Turtle Chia-Wei
Hsu leaves the battlefield.
{t}: Add {g} or {u} to your mana pool.
{5}{g/u}{g/u}: Island Turtle Chia-Wei Hsu becomes
a 8/8 blue and green turtle creature with
Islandwalk and vigilance. It's still a land.