Case of the Burning Masks

When this Case enters, it deals 3 damage to target creature an opponent controls. To solve — Three or more sources you controlled dealt damage this turn. (If unsolved, solve at the beginning of your end step.) Solved — Sacrifice this Case: Exile the top three cards of your library. Choose one of them. You may play that

card this turn.

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6o6v0s41xjpb1hqabfn44h.