Rahab, Angel of the Deep

Indestructible, islandwalk
Rahab, Angel of the Deep enters the battlefield
with three guidance counters on it. At the start
of your upkeep, remove a guidance counter from
it. When the last guidance counter is removed, sacrifice Rahab and destroy target creature.
{3}{u}{b}{g}: Return Rahab, Angel of the Deep
from the graveyard to the battlefield.