Monica Rambeau // Photon, Living Light

The design bet here is that prowess wants to escalate, not just accumulate. On the front, Monica is a self-contained beater: a flyer whose noncreature chains swell her body for the turn, the familiar prowess loop where the reward stays on one creature and expires with the turn. The transform clause is where the ambition shows. It costs a full second casting (, sorcery-speed only), five mana on top of whatever you spent to deploy her, and it converts a solitary aggressor into a team engine. Photon keeps her own prowess after the flip (the trigger still swells her along with everyone else), but the payload changes shape: each noncreature spell now also stamps a permanent +1/+1 counter on every other creature you control, so a spellslinger's chain becomes a board-wide growth spurt that outlasts the turn. The hexproof on the back is the insurance that makes the five mana worth committing: having flipped into a go-wide plan, you get an anchor targeted removal cannot pick off, so the counters keep landing turn after turn. It reads as two interpretations of one keyword stapled together: prowess as tempo when you need to race on a single flyer, prowess as an army-builder when you have the mana and the board to convert. The transform is a deliberate gear-shift rather than a passive upgrade, asking you to judge when the solo threat has done its work and the counter-factory should take over.