Skathhs, Deep Prowler

Islandwalk
When Skathhs enters the battlefield, exile target creature an opponent controls until Skathhs
leaves the battlefield.
{3}: Put a card exiled with Skathhs into its owner's graveyard.
{u}{b}{g}: Exile Skathhs, and return him to the battlefield at the beginning of your turn.
"You can only run for so long..."