Glorious End

The clause that fascinates here is the deferred cost: you do not lose when you cast it, you lose one end step later. That gap is the whole instruction set. End the turn now, exile everything still on the stack including your own removal-proofing, and walk into a turn you must convert into a win before your own clock catches up. The card does not buy you a turn so much as it freezes one: an opponent's lethal swing evaporates mid-combat, their counterspells and burn fall off the stack along with the resolution they were chasing, and the board state locks exactly where you want it. The honest comparison is to Time Stop, which ends the turn cleanly and asks nothing in return; this version slashes the cost from six mana to three and pays the difference in a death trigger you have to outrun. That makes it less a defensive tool than a combo enabler. The decks that want it are the ones already holding a kill they can deploy on the stolen turn, or a way to peel the suicide trigger off before it resolves. Read straight, the card is a Fog with a noose attached. Read as designed, it is a hard answer to anything on the stack that happens to come stapled to a deadline, and the deck's job is to make sure the deadline never lands.