Bewilder

The -3/-0 is the giveaway: this is a defensive cantrip, not a removal spell. Knocking three power off an attacker for a turn keeps your blocker alive or saves your life total without losing a card, and the cantrip means you never feel the tempo cost in the long game. That power-only reduction is the entire point of the design: a softer cousin to the older trick of shrinking a creature's offense for a single swing. It does nothing about toughness, so it can never trade up or kill, only blunt. What makes it more than a margin-of-error combat answer is the draw stapled on: the floor is "replace itself," and the ceiling is "ambush their alpha-strike and refill." Cards like this exist to grease a controlling deck's curve, smoothing the dead turns where holding up a response and digging for a real answer is the best play available. The body of the effect is forgettable; the cantrip is why it ever made a deck.