Might of Murasa

The scaling pump spell is one of green's oldest tricks: pay a little for a modest boost early, pay more for a decisive one late. What kicker does here is fold both spells into a single card so you never draw the small one when you need the big one, or the big one when you only have two mana. Untouched, +3/+3 at instant speed wins a combat step or turns a mana dork into a real threat; kicked for the full price, +5/+5 blows out a block, punches through a wall, or carries a lethal swing that the opponent had every reason to think they'd survived. The design keeps both halves honest by pricing the payoff to the mana available: the cheap mode is a fair trick, the kicked mode is a haymaker you have to actually afford. Because it's an instant, the real value lives in the ambush window: holding it up during declare-blockers so a favorable-looking attack for the opponent becomes a two-for-one in your favor, or answering a removal spell by making the creature too big to kill in a single point of interaction. That flexibility is the whole reason a pump spell earns a slot over a creature that just has the stats printed on it: you get to choose the moment, and kicker lets you choose the magnitude too.