Eyeless, Sundr of Repossession

When Eyeless, Sundr of Repossession enters the battlefield, you may return target creature from a graveyard to the battlefield under your control, if you do, exile Eyeless haunting that creature and it get -2/-2.
When a creature haunted by Eyeless, Sundr of Repossession leaves the battlefield, exile it instead, then return Eyeless to the battlefield at the beginning of the next end step.