Lost at Sea

Enchant target opponent.
Lost at Sea enters the battlefield with four Flood counters on it.
All creatures your opponent controls gain Islandwalk.
Remove a Flood counter from Lost at Sea. If you do, tap target creature you control, that creature doesn't untap until Lost at Sea leaves the battlefield. Activate this ability only once per turn.
You may destroy all non-Piracte creatures you control. If you do, destroy Lost at Sea.