Final Fortune 
Instant
Take an extra turn after this one. At the beginning of that turn's end step, you lose the game.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL
Instant
Take an extra turn after this one. At the beginning of that turn's end step, you lose the game.