Terashi's Verdict

Two restrictions stacked on top of each other define what this is: it only kills attackers, and only attackers with power 3 or less. The first is the older of the two ideas, the white "fog with a corpse" tradition where the color gets to punish aggression but not initiate it. The second narrows the window further, pricing the card to answer the early curve (the bears, the two-drops, the small creatures that lead a beatdown) and to fold against anything that has grown past it. The payoff for accepting both clauses is the instant speed and an unconditional destroy at two mana: a dead attacker mid-combat with no toughness threshold to clear, no "deals damage" intermediary, just removal that fires the moment a blocker would. It still answers to regeneration, since "Destroy" without a regeneration-shield clause is exactly what a regeneration effect replaces, so the cleanest kills are the creatures that cannot save themselves. The Arcane subtype completes the picture, slotting this into a spell-matters shell as a cheap trigger for the splice-and-channel machinery of its era rather than as a standalone removal pick. That dual identity is the honest read: as removal it is too conditional to anchor a deck, but as a cheap, reactive combat answer that happens to carry a relevant subtype, it does specific work an unconditional kill spell could not. Removal built to be a cog, not a centerpiece.