Devour in Flames

Five damage to a creature or planeswalker for sits well above the damage-per-mana rate red usually offers, and the additional cost is the lever that pays for it: you return a land you control to its owner's hand before the spell resolves. The trade is developmental. You answer the threat but surrender a land drop's worth of progress, then spend a turn recouping the mana the discount saved you. Red has long sold above-rate burn with a string attached: Char charges two damage to your own face, Skewer the Critics demands spectacle. This one charges in tempo and board development instead, which reads differently depending on whether you are racing or stabilizing. The bounce is not pure downside, either. Returning a land that has already tapped for the spell, or one with an enters-the-battlefield trigger worth replaying, blunts the cost or inverts it outright. What the five damage buys is removal that scales past the toughness most creatures carry, though it is damage and not destruction: a six-toughness body shrugs it off, and indestructibility makes the spell dead weight. The price is structural rather than situational, biting hardest when your manabase is already stumbling, which is precisely the turn you can least afford to hand a land back.