Ms. Marvel, Kamala Khan

The 1/4 body with reach and vigilance is a decoy: the real engine is the payoff attached to targeting your own creatures. Most spells that target a creature you control are the kind of card advantage that quietly loses tempo, the pump spells and protection tricks that trade a card to keep a card. Embiggen Fist rewrites that math by turning every one of those spells into a cantrip, and each one also re-arms the base-power switch. Because the trigger fires only on creatures you control, this rewards an Auras-and-tricks shell rather than a burn-or-counter spellslinger, and that shell is the one archetype that has always struggled to convert its two-for-ones into a clock. The no-maximum-hand-size clause is load-bearing rather than filler. Since the base-power set reads off your hand size, every card you refuse to discard is a point of power waiting for the turn you decide to attack, which pushes the deck toward hoarding rather than dumping its hand. That is an unusual tension for blue, a color that normally wants to spend cards to control the board, not stockpile them into a finisher. The design asks you to hold the fist until the turn it swings for lethal, then flood the stack with self-targeting spells: each one draws you deeper into your hand and refreshes the power-set line, so a fistful of tricks can turn a 1/4 into a game-ending body in a single turn.