Elite Arcanist

Isochron Scepter handed an instant to artifact decks for two mana and one tap; this is the creature version, scaled to the spell instead of fixed at it. The difference is the activation cost. Where the Scepter only worked with cheap instants (its own clause capped what it could imprint), this puts no ceiling on the exiled card and instead prices each copy at the spell's own mana value. That inversion is the whole design: it rewards exiling something expensive enough that the free recast matters, then taxes you every turn you want to fire it. The 1/1 body keeps the engine honest, since the value lives entirely in protecting the Wizard long enough to recoup the four mana you spent assembling it. The enter-the-battlefield exile is a one-time window, too: lose the body and the imprinted card goes with it, so this is a commitment rather than a flexible toolbox. The math only works once the copied spell does enough that paying its cost again, minus the mana symbols, is a real discount. As an engine, it asks for a deck that already wants to cast the same instant repeatedly and is willing to spend the rest of its resources keeping a fragile Wizard alive to do it.