Furnace Dragon

Cast from your hand, this is a board wipe with a 5/5 flier stapled to it: every artifact on the battlefield, your own included, gets exiled. That clause is the punchline of a hate card built against an artifact-saturated era, when affinity decks flooded the board and the format bent around them. The trick is in the casting math. Affinity for artifacts reduces the cost by each artifact you control, so this is not a tax on the opponent's commitment; it is a reward for your own. You assemble a board of artifacts, ride them down to a castable price, then watch the enter trigger exile the lot (theirs and yours) before the Dragon settles in as a hard-to-block clock. Two restrictions keep the design honest. The exile only fires when you cast it from your hand, so reanimation and flicker strategies cannot manufacture a free Armageddon-for-artifacts, and the wipe is symmetric, scooping up your own affinity sources along with the opponent's engine. That symmetry is why it lives in decks willing to spend their artifacts to deploy it rather than ones built to keep them around. The whole design folds back on itself: the discount comes from the same resource it punishes, so the wider the artifact glut, the cheaper the reset.