Alexi, Zephyr Mage

Spellshaper was Prophecy's marquee mechanic: a creature type built to turn cards in hand into a repeatable spell engine, paying the effect's cost with cards from your grip rather than mana alone. Alexi sits at the high end of that experiment, scaling the bounce by X and tapping to fire a one-sided mini-Evacuation as often as you can fuel it. The discard-two clause is the structural brake. Every activation costs the same two cards from hand no matter how many creatures you sweep, so the mana scales with X while the card cost stays flat: bouncing one creature and bouncing four both ask for two cards off the top of your grip. That fixed tax is what keeps a repeatable, scalable bounce from being oppressive. You trade raw card advantage for tempo, clearing multiple blockers or attackers back to hand while burning two cards each time you pull the trigger. The card wants a deck that can keep its hand stocked faster than Alexi empties it, which is precisely the tension Spellshaper was designed to create. Where a sorcery-speed mass-bounce spell does its work once and is gone, the Spellshaper template trades that single big swing for an effect that lives on the battlefield and recurs, at the cost of being vulnerable to removal and hungry for fuel. Alexi is the legendary, scalable expression of that idea: a blue control finisher that wins by repeatedly undoing the board rather than answering it permanently.