Glacier-Swallower

When Glacier-Swallower enters the battlefield, if {r} was spent to cast it, you may return up to three target permanents to their owner's hand. For each permanent returned this way, Glacier-Swallower deals 2 damage to that permanent's owner.
Islandwalk, Hexproof.
There's a reason why the unknown coasts of the Abyssal Sea stay that way.