Amphibian Downpour

Storm on a removal Aura is a strange marriage, and it works because the two halves solve each other's problems. Polymorph-style effects that strip a creature down to a vanilla body have always struggled with the same weakness: they answer one threat and only one, so against a wide board they fall behind. Bolting the effect onto Storm converts that single answer into a scaling one, copying the Aura for every spell cast earlier in the turn and letting each copy neuter a different creature. The copies become tokens rather than permanents you cast, which sidesteps the timing questions Storm usually raises, and Flash means the whole package can happen on the opponent's turn, in response to an attack or a stack of triggers, rather than telegraphing itself at sorcery speed. What the Aura does to its target is quieter than a kill spell but often crueler: it does not remove the creature, it demotes it to a 1/1 blue Frog with no abilities, which turns off death triggers, indestructibility, and any ability-based protection the creature was leaning on. That distinction is the design's real teeth. Against a single overgrown threat it is a clean, mana-light answer; in a turn built around a chain of cheap spells it becomes a one-card board reset that leaves an army of harmless amphibians behind.