Pennon Blade

The math runs in the wrong direction for an Equipment, and that is the whole appeal. Most gear buffs a single creature in isolation: a flat +2/+2, a keyword, a static bump that does not care how many bodies you have committed elsewhere. This one scales off the width you have already built, concentrating a go-wide board into one overwhelming threat. Drop it on a token-maker's output and a 1/1 becomes a haymaker; the more creatures you control, the more lopsided the equipped one gets. That dependency is also the catch. The bonus is only as large as your count of creatures, so it does nothing on an empty table and evaporates under a sweeper: kill the support and the carrier shrinks back toward its printed stats mid-combat. The four-mana equip, sorcery-speed only, keeps the card honest by demanding you reattach on your own turn rather than ambushing blocks at instant speed, and by taxing the recommit if your carrier dies. It sits in a small lineage of "reward me for what I already have on the table" buffs that anthem effects usually handle by spreading the bonus across the team. Here the effect is routed through Equipment so the payoff piles onto one attacker instead. It is the swarm payoff that asks you to build the swarm first, then bet it all on a single creature getting through.