Bonehoard

The number it cares about lives in everyone's graveyard, not just yours, and that is the whole design. Living weapon means it never needs a creature to function: it shows up, builds its own 0/0 Germ to wear it, and immediately becomes whatever the game's body count says it should be. In an empty graveyard it equips a 0/0 to a token that dies on the spot, but the longer a game grinds, the more it taxes both players' attrition. Every creature traded in combat, every chump block, every wrath feeds it, which makes it the rare Equipment that gets stronger from your opponent killing things. The +X/+X scales off a public, shared resource, so a board stall or a long removal war is exactly the condition under which it goes from unplayable to lethal. The Living weapon keyword does the real structural work here: it converts an Equipment, normally dead without a creature, into a self-sufficient threat that sidesteps the genre's classic vulnerability to having no body to suit up. That same self-attaching token also makes it a clean way to turn one card into a growing creature in any deck that wants graveyard payoffs without dedicating creatures to the board. It is the kind of card whose ceiling is set by the table rather than the deck holding it, which is what keeps it relevant in any grindy, creature-heavy environment regardless of color.