Aberrant Mind Sorcerer

Targeted graveyard recursion for instants and sorceries, stapled to a 3/4 body and softened by a d20 that decides not whether you get the card back but how fast. Both halves of the roll retrieve the target; the 1 through 9 result parks it on top of your library, costing you a draw step to recast, while 10 through 20 hands it straight to your grip. Since the higher band is the wider one, the "penalty" lands on the good side more often than not, which makes it feel like flavor from the source material's dice-rolling identity as much as a genuine tax. The tighter restriction is the target itself: this recurs only along the spell axis, no artifacts, no enchantments, nothing else in the yard. What separates it from a spell that does the same thing is that the retrieval rides an enters trigger on a creature that stays on the battlefield afterward. It blocks, it attacks, and every time it re-enters (a flicker, a bounce, a fresh cast) it lines up another target and another roll. That repeatability is where the value actually accrues; a single copy of a Regrowth-style effect is fine, but a body that can hand you back your best instant or sorcery on a loop is an engine. Pick the target on entry, take whichever half the die gives you, and let the creature earn its keep in combat between rolls.