Righteous Authority

The design knot here is that a buff scaling off hand size wants you to hold cards, while a card-advantage engine wants you to keep drawing into play. Most aura beaters punish the empty hand: the more you commit, the smaller they get. This one resolves that tension by feeding the same resource it consumes. The +1/+1-per-card-in-hand clause turns a full grip into raw power, and the bonus draw on each of your draw steps refills the grip you spend pressuring the board, so the creature's size and your card economy climb on the same axis instead of fighting over it. The catch is structural rather than written into a counter or a cost: it is an Aura, which means all of this lives on one creature, and removing that creature collects both the body and the engine in a single answer. Layer in the draw step's timing and the picture sharpens, because the extra card arrives before combat each turn, sizing up the threat on the same turn you cast spells off the swollen hand. It rewards a deck built to keep cards in hand rather than dump them, the rare aura that scales with patience instead of tempo.