Warrior's Oath

The extra-turn spell that hands you a countdown timer along with the turn. Take another turn, but at its end step you simply lose. That clause reframes the whole card: this is not a tempo advantage or a value engine, it is a payment structure. You are buying one full turn of untapped lands, a fresh attack step, and a second main phase, and the price is that you must end the game before the tax comes due. In practice that makes it a combo enabler dressed as a Time Walk, the kind of card built for a deck that can convert a single extra turn into lethal or into an infinite loop that never reaches the end step. Red rarely gets to touch time-manipulation at all, and when it does the effect almost always carries a self-immolating rider, because unconditional extra turns are among the most tightly policed effects in the game's history. Here the leash is the bluntest one available: win now or don't win at all. The design lives entirely in that tension, so the card is worthless to a fair deck and potentially lethal to one whose clock beats the deadline. It rewards knowing exactly how you close, and punishes anyone who casts it hoping to figure that out later.