Outlaw Stitcher

The token this makes scales with how storm-y your turn was, not with the board you already have: every spell past the first stacks two +1/+1 counters onto a 2/2, so the payoff is a function of spell velocity measured at the moment the trigger resolves. Cast it flat off the top and you get a 2/2 alongside a 1/4 body, a fine defensive floor and nothing more. Chain it behind a couple of cheap spells and the Zombie Rogue arrives already large. That coupling of a "spells cast this turn" count to a body's arrival is the knot the design ties, and Plot is what unties it: prepay the cost a turn early, then cast the creature for free later, which frees up a full turn's worth of mana to spend on exactly the spells that feed the counter math. The card wants to be the last thing you do in a turn, dropped once you have already emptied your hand, and Plot lets you queue that turn up a beat in advance without paying for the body twice. It is a rare thing among value creatures: a payoff that rewards how many spells you cast rather than how many permanents you control, wearing a durable enough shell to survive a lull between the turns where it does its real work.