Whirlwind Adept

Hexproof and prowess pull toward opposite decklists, which is why they rarely share a card. Hexproof wants a body worth protecting: stack auras and pump onto a creature the opponent can never target, and win before a sweeper shows up. Prowess wants a hand full of noncreature spells, but the growth it hands out lasts only until end of turn, exactly the fleeting tempo a hexproof beater doesn't usually care about. This Djinn Monk asks to be both at once: a 4/2 with no evasion your opponent can't touch, swinging as a 5/3 or larger off a single instant. The two toughness is what stops it from finishing games on its own (combat math catches up the moment prowess wears off), so the 4/2 is designed to be carried, either by whatever noncreature spells the deck is running or by the protection it hands itself. That self-protection is the real wrinkle. Targeted pump you'd happily aim at any other creature can never be answered with a Doom Blade in response here, because there is no legal target to interrupt: the pump and the body are both untouchable. What results is a member of the uninteractive-beater school, the line of threats that force the opponent to race rather than answer, with a five-mana buy-in that demands you sink real resources into the board before that race even begins.