Meletis Charlatan

The fork on a stick, with a crucial asymmetry the rate quietly depends on. Spell-copying in blue usually arrives as a one-shot instant (Twincast and its kin), where the value lives in doubling your own spell once or stealing an opponent's. Putting that effect on a creature with a tap ability makes the copy repeatable: available every turn the body survives, fired off whenever an instant or sorcery is sitting on the stack. But read the oracle text closely, because the engine only points one direction. The copy goes to the controller of the targeted spell, and that player chooses the new targets. Aim it at your own removal and you get the duplicate to redirect at a second threat; aim it at an opponent's burn spell and you are handing them a free copy to point wherever they like. This is a doubler for your own stuff, not a redirection tool against theirs. The timing is the other catch: the activation is itself an ability that sits on the stack, so you have to respond to a spell while it is still there, before it resolves, which makes the wizard a reactive piece rather than something you simply untap and fire. A 2/3 body is fragile enough that the ability rarely gets to run away, which is the honest reason a recurring spell-copier sits here rather than at the premium a one-shot version commands. A slow, conditional engine that wants a deck full of instants and sorceries worth doubling.