Fiery Temper

Discard it to a rummaging effect and three damage costs you a single red mana, the same rate as the spells red has historically priced lowest. That is the trick at the heart of the card: the printed cost is deliberately mediocre because the design assumes you will never pay it. Madness rewrites the math entirely, turning what looks like an overpriced burn spell into one of the most efficient ones in the game whenever a discard outlet is on the table. The friction is finding that outlet: this is a payoff that does nothing until something else feeds it into exile, so it asks the deck around it to be built on looting, rummaging, or a hellbent commitment to emptying the hand. The structural elegance is that the discard is usually something the deck wanted to do anyway, so the burn arrives as a free byproduct of an action that was already advancing the plan. Pair it with a rummager and you are not spending mana to throw away a card; you are throwing a card away and getting three damage as the receipt. That inversion (cost as upside) is why the card has outlived the block it debuted in: any format that assembles a critical mass of discard outlets converts it from filler into a premium reach spell, and the option to simply hard-cast it for full price means it never rots in hand as a dead draw.