Reckless Fireweaver

The whole point of an artifact-matters payoff is to convert a deck's natural churn into damage the opponent cannot interact with, and this is the cheapest, most direct version of that conversion: every artifact that touches the battlefield, no matter how it got there, pings each opponent for one. The trigger keys off the artifact entering, not on casting it, which is the detail that makes the card dangerous in the right shell. Tokens count. Recurred artifacts count. Anything that flickers and returns counts. The result is a payoff that scales not with how good your artifacts are but with how many times they enter, turning a board of cheap trinkets and a way to loop them into a clock that ends games without ever attacking. The 1/3 body confirms the card was built as an engine piece and not a combatant: it survives incidental removal and sits behind blockers while the loop assembles. On its own it does almost nothing, which is the price an effect like this pays for asking the deck around it to supply the volume. Pair it with a reliable source of repeatable artifact enters and the damage stops being incidental and becomes the plan.