Batterskull

What living weapon solved was the dead-draw problem that haunts Equipment: a Sword of anything in your opening hand with no creature to wield it is a brick. By tying a 0/0 Germ token to the enters-the-battlefield trigger, this Equipment carries its own body, so it resolves immediately into a 4/4 lifelinker with vigilance, no creature required and no equip cost paid up front. That the token is minted on entry rather than on cast matters in both directions: counter the spell and no Germ appears, but cheat the Equipment onto the battlefield by other means and the body still materializes attached. That self-sufficiency is exactly what made it dangerous: it threatens lethal swings while gaining the life that keeps an aggressor out of reach, and it can retreat from a sorcery-speed sweep. The bounce-to-hand clause is the real engine of its resilience. Equipment is famously sticky against creature-based answers, but the Germ is a removal magnet, so the ability lets you recall the whole package in response to a kill spell or a wrath, then redeploy next turn for the price of a recast rather than the full equip. An opponent who spends a Doom Blade on the token has spent removal on a token; the threat just walks back home. The result is a recurring clock that demands an answer which exiles or counters rather than destroys, and demands it more than once: a permanent that behaves like a creature, an Equipment, and a value engine without ever committing to being only one.