Gigantoskeleton Testing

When Gigantoskeleton Testing enters the battlefield, exile target artifact or enchantment.
{1}{u} : Add a charge counter onto
Gigantoskeleton Testing. Gain 1 life.
Remove 8 charge counters from Gigantoskeleton Testing : Put a 10/10 colorless Golem creature
token onto the battlefield, then return Gigantoskeleton Testing to its owner's hand.