Notion Thief

The trick lives in the exception clause. Letting opponents keep their first natural draw each turn keeps the effect from strangling a normal game; instead it punishes the extra card draw that engines, cantrips, and wheel effects depend on. Point it at someone resolving a draw-seven and the entire payload reroutes into your hand at instant speed. Flash is the connective tissue that makes that possible, since it lets the body land with the spell still on the stack, turning an opponent's draw spell into your own card advantage before they ever touch the cards. A 3/1 is a deliberately fragile shell for an effect this disruptive: the design wants the ability to do the work and the body to die to almost anything, which keeps the rate honest against the alternative of stapling this kind of hatebear effect to something durable. Among the handful of draw-redirection pieces, this one is distinguished by the granularity of its carve-out: not "skip all draws" and not "no extra draws," but precisely one allowed draw per draw step, a line drawn so the punishment scales with greed. The card does the least against a draw-go control mirror and the most the instant someone tries to refill, which makes it a tax on velocity dressed up as a creature.