Wakestone Gargoyle

Defender exists to take a stat line that would otherwise be underpriced and turn it into a stationary wall: a 3/4 flier trades with the 3-drops and 4-drops it blocks precisely because it has surrendered its attack step. This Gargoyle quietly buys that step back, and not just for itself. The activated ability lets every defender you control swing, which means the whole wall (this body plus any other Defenders sitting in your zone) can pivot from a holding pattern to a coordinated alpha strike in a single turn. That is the design tension at the heart of every wall-aggro plan: you want bodies that defend cheaply on the early turns and bodies that can close, and Defender forbids the second job by construction. The cost-to-attack clause resolves that contradiction by paying for the offense separately, at the moment you choose to commit, rather than baking it into the rate. The mana investment is the friction that stops it from being free aggression; you have to decide the wall is done defending. As a flier it is already a respectable blocker on its own merits, but the line on the card that matters is the one that licenses the rest of the team. It is the enabler a defender deck has to have if "block until it's safe, then everyone attacks" is going to be a real wincon rather than a stalling tactic.