Purgatory

Whenever a nontoken creature is put into your graveyard from the battlefield, exile that card. At the beginning of your upkeep, you may pay {4} and 2 life. If you do, return a card exiled with this enchantment to the battlefield.

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6oi8y7d55vpb1hbzl2u35g.