Siege Dragon

Defensive walls have always been the natural predator of red aggression, and this Dragon was built to be the predator's predator. The entry trigger sweeps away every Wall your opponents control, and the attack trigger punishes them for ever having relied on a ground-stall plan: if no Walls remain, the swing rakes 2 damage across each grounded creature the defending player controls. It is a hoser pointed squarely at the old Wall-and-burn defensive archetype, the kind of stall built around Wall of Denial and its cousins, packaged onto a 5/5 flyer so the answer also closes the game it just opened up. The design reads less as a generically good Dragon and more as a deliberate answer to grinding ground gridlock: here is the body that flies over it, dismantles it, and pings the holdouts on the way through. The conditional second clause is what keeps it from being a one-note removal spell stapled to evasion: an opponent who can rebuild even a single Wall shuts off the attack damage entirely, so the threat polices Wall decks specifically rather than mowing down any defensive board. That narrowness is the point. It is a narrow, hoser-shaped effect printed at mythic-feeling scale, a finisher whose abilities only fully fire against the exact strategy it was made to humiliate.