Divining Witch

The activated ability reads like a tutor, but the mechanism is doing something far stranger: it exiles the top six cards before it ever starts looking, then burns through your library naming a single card and exiling everything it passes along the way. That is not a search, it is a controlled detonation of your own deck. For a long stretch this was the engine behind one of the purest combo lines anyone had assembled, the kind of deck that wanted to put its entire library into exile in a single turn and win on the resulting emptiness. Pair it with cards that punish or reward a thinned-to-zero library, name something you do not own (or something already gone), and the witch will happily exile the whole deck looking for a card that will never appear, leaving you drawing from nothing. The Spellshaper framing is the balancing friction: a 1/1 body that taps and demands a card from hand each activation, so the abuse has a clock and a cost. It lives in the small family of effects from its era that treated the library as ammunition rather than a resource to protect, a design philosophy Wizards has been careful with ever since, because the line between "tutor" and "self-mill your way to a win" turned out to be exactly the kind of edge combo players sharpen.