Hammer Mage

The scaling X is the trick that distinguishes this from any fixed-cutoff sweeper of its era: you choose how high the destruction reaches, so the same 1/1 can clip a single fast-mana rock early or detonate a whole artifact mana shell later in the game, all from one repeatable body. The discard is the throttle on what would otherwise be free recurring artifact removal, and the tap means each firing costs the body a turn of combat (not that a 1/1 was contributing much there anyway). The asymmetry runs deeper than the symmetric "destroy all" wording suggests: a deck running few or no artifacts pays only its own activation while an opponent leaning on cheap trinkets watches the floor give way underneath them. What separates it from a one-shot board wipe is permanence. The Spellshaper stays in play, ready to fire again the instant the next piece of hardware resolves, and since the ability can be activated at instant speed, you can hold it up and detonate on the opponent's turn: blow up the rock they just tapped out for, or answer an artifact mid-combat rather than waiting for your own main phase. That instant-speed window is what gives a humble body the feel of a soft lock against decks that need their hardware online to function. It is the Spellshaper thesis in miniature: convert cards in hand into sustained, scalable answers stapled to a creature you keep rather than a spell you spend.