Blue Dragon

The interesting design choice here is that the entry effect only touches power, never toughness. Lightning Breath spreads -3/-0, -2/-0, and -1/-0 across up to three creatures (only the -3/-0 target must be one an opponent controls), which means it does not kill anything: it strips offense while leaving every blocker on the board. That is a deliberately unusual answer profile. Most seven-mana creatures that come down with a removal clause want to clear a path or trade up; this one is built to neuter a swarm's attack step for exactly one turn cycle, blunting three attackers at once while the 5/5 flyer starts pressuring the air. The temporary window ("until your next turn") makes it a tempo tool rather than a permanent sweep, best against wide aggressive boards where dropping the collective power output buys the time a slow controlling body needs to stabilize. It reflects a broader design pattern of using -X/-0 as a softer, non-lethal cousin to conventional removal: the creatures survive, so it dodges recursion and death triggers entirely, but it also does nothing against a single large threat whose power you can only shave, not erase. That narrow lane (many small attackers, no big ones) is the constraint that keeps a body this size honest at seven mana.