Nim Shambler

A 2/1 for double black that means almost nothing until you read the board around it. The math runs in both directions: in a deck with few artifacts this is a fragile two-power body, and in one built around the artifact theme it swells into a threat that demands removal. That conditionality is the whole pitch of the era's artifact-matters design: bodies priced to reward the player who has committed to the theme and to embarrass the one who hasn't. The regeneration clause is the wrinkle that protects the investment, because a creature whose size depends on your board state is worth keeping alive; feeding it a spare token or a tapped-out blocker to dodge a removal spell is a clean trade. Black gets the artifact-count payoff with attrition insurance folded in, which suits the color's identity better than a clean beater would: the sacrifice cost turns your own creatures into ablative armor. It functions as a deckbuilding lever rather than a card that does work in isolation. Your threat assessment of it shifts entirely based on how deep your battlefield is in artifacts, and that swing is exactly the lesson the design wanted to teach.