Scion of Glaciers

A 2/5 body that can wring seven power out of itself is a strange thing to find in blue, and that inversion is the point of the whole design. It starts as a defensive blocker, then runs the trade backwards: each blue mana swaps a point of toughness for a point of power, so a stack of activations turns a sponge into an attacker that hits well above its starting line before fragility catches up. The catch is welded to the same lever. Every activation lowers toughness, and three pumps already leave the body at 5/2; push to a 7/0 (five activations, five blue) and the creature falls into the graveyard as a state-based action, since a creature with zero toughness is put there regardless of indestructibility. That distinction matters: no protective trick brings it back once you drop toughness to nothing. The result is a creature you ration mana toward rather than dump mana into. Hold it as a wall on defense, then spend its toughness down in one decisive swing, calculating exactly how far the body can be pushed before it collapses under its own ability. It asks you to expend the resource, toughness, that you would normally hoard, and turns a durability stat into a firing pin.