Your Inescapable Doom

(An ongoing scheme remains face up.) At the beginning of your end step, put a doom counter on this scheme, then this scheme deals damage equal to the number of doom counters on it to the opponent with the highest life total among your opponents. If two or more players are tied for highest life total, you choose one.

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6ohxtxcwovpb1hucap0mix.