Ghalma's Warden

Metalcraft was the artifact-block answer to threshold and delirium: a binary switch that pays out only once you cross a counting line, here three or more artifacts. This creature commits to that switch more literally than any of its peers. The 2/4 it starts as is a defensive body, the kind that blocks the early aggression artifact decks tend to invite, and the moment your board crosses the threshold it becomes a 4/6 that attacks like a finisher. The wrinkle is that the bonus is conditional and ongoing, not a one-time stamp: lose your third artifact to removal or a sacrifice cost and the Warden shrinks back to baseline mid-combat, which makes it a soft pressure point for an opponent who can pick off your equipment or tokens at instant speed. As a metalcraft payoff it sits at the plain end of the design: no evasion, no card advantage, just a stat swing keyed to a count you were already trying to hit. That restraint is what keeps it serviceable rather than dangerous, a common-rarity body for an artifact-aggro shell whose whole reason to exist is to be small when you are behind on artifacts and large when you are ahead.