End-Blaze Epiphany

Most X-damage spells stop caring the instant the creature hits the graveyard; the kill is the whole transaction. Here the kill is the setup. Sizing X to actually finish a creature does double duty: it pays for the removal and it sets the depth of the payoff, because the number of cards exiled off the top keys to the dead creature's power, not the mana you spent. That coupling is the interesting part. Point it at a small utility creature and you get clean removal with a scrap of card advantage attached; point it at something large and the impulse-draw balloons in step with the threat you were already scared of. The death clause reads as a reward but doubles as a hedge: it triggers on the creature dying "this turn," so a chump block, a later sacrifice effect, or a second removal spell finishing the job all feed the same engine. The counterweight is the window on the exiled card. You choose one card and may play it for a limited stretch only, so the dig is real but disposable; whatever you exile that you do not play, you never see again. It rewards killing a threat you were going to answer anyway and turning that answer into a peek deep into your library, priced so the peek only runs deep when the threat was worth answering in the first place.