Mouser Foundry

The activation cost is the whole argument. Five mana for a Shock that leaves a 1/1 behind is not a rate that wins a midrange format on its own, and TMT is a midrange format: medium speed, medium removal, common creatures sitting at the 2/3 and 3/2 bands that a three-damage activation answers cleanly but a 1/1 Robot cannot threaten. Draftsim's 3/10 is too low, but the diagnosis underneath it (no obvious sacrifice outlets at common) is right. Without a second engine in the room, the card is a slow two-for-one: you cast it for a token now and pay a full turn later to get the back half.

The home is BR or Mardu Sacrifice, where the Food subtheme gives the Foundry somewhere to be cashed in before turn five. Anchovy & Banana Pizza and Omni-Cheese Pizza are the throughput it wants: a token to feed, a Food to convert, and a steady drip of artifact-count triggers that the activated removal feeds back into. In a base-red deck without that scaffolding, it sits as a P1P8-to-P1P12 flex card that you maindeck two of and quietly regret.

In committed BR Sacrifice the band climbs to P1P5 to P1P7, still behind Bot Bashing Time and Stomped by the Foot as raw removal, but a real engine piece once you've signaled. Bespoke Bō and Novel Nunchaku turn the spare Robots into a clock, which is what keeps the five-mana activation honest. The failure case is drafting it on text in UR Sneak or RW Equipment, where you never want to spend the turn to fire the leave trigger and the front-loaded 1/1 is all you ever get for your two mana.

The token-on-leave clause is the whole pitch, and it makes this an artifact-token feeder more than a removal piece. The Robots are the food. Krenko, Mob Boss does not want it (the tokens are colorless artifacts, not Goblins), but a red sacrifice commander that ignores creature type does. Prosper, Tome-Bound is the clean home: an artifact-and-impulse value engine where a steady drip of disposable bodies feeds a recursion and aristocrats subtheme, and the five-mana activation converts spare mana into three damage plus a replacement Robot rather than a dead card. Because the Foundry is a noncreature artifact, its own entering and leaving do not trigger creature-death or cast effects; the value lives entirely in the Robots it spits out, which are exactly the bodies you want flowing through Ashnod's Altar or dying in front of a Blood Artist. A Treasure-leaning Magda, Brazen Outlaw list can run it too, though purely as an extra artifact body for the count and a sacrifice sink, not as a trigger for Magda herself, since the Robots are not Dwarves and never tap to feed her.

This is a Bracket 2-3 card. The rate on each line is too soft for cEDH, where the artifact-token slot goes to Pitiless Plunderer or actual fast mana, and the synergy is too specific for precon shelves. Sub-$5, likely bulk for most of its print life. Treat it as the eighth or tenth piece of an artifact-and-sacrifice submodule, not a curve play and not a removal staple. Against a dedicated outlet like Ashnod's Altar or Goblin Bombardment, the leave-trigger makes another body every time you recur and re-sacrifice it, turning this into a slow value engine; cast and forgotten, it is two 1/1s and a five-mana three-damage shot. Outside a Prosper recursion shell, there is little for the deck to do with the Robots, and that describes most tables.

A two-mana artifact for the budget end of red sacrifice and artifact-aristocrats brews, where you want a body that doubles as removal and a free token when it dies. The trouble is that Modern's aristocrats and reanimation shells already run faster, cheaper fodder, and the five-mana activation is too slow to function as real removal here. Legal, but it has yet to register in tracked tournament play, and nothing in the format is asking for this rate. Fine in a casual artifact deck, cut from anything trying to win on time.

Legal since March 2026, and effectively absent from tracked Standard this season. One pilot has registered it recently, as a two-of, which is closer to a rounding error than a presence. Against the field, it reads as a card waiting for an engine that has not assembled.

The structural gap is the one the identity prose flags: each line is modest in isolation, and the payoff only materializes when a second piece is in the room to loop the artifact, blink it, or feed it to an outlet. Standard right now does not give that piece a home. There is no aristocrats shell costing out sacrifice fodder, no red recursion engine that wants a two-mana artifact replaying its enter-and-leave triggers on a loop. Cast and forgotten, Mouser Foundry is a token maker with a five-mana Shock attached, and that rate does not clear the bar in a format that prices removal and threats more aggressively. The card needs to be in a deck built around it, and that deck is not currently being built.

The Robots-and-recursion ceiling is real, but it stays theoretical until a payoff prints around it.

Standard rotation runs on a three-year clock, so the set this came in stays legal until the fall 2027 cycle, exact date pending Wizards' announcement. That is a long runway, which works in the card's favor: nothing on the announced schedule gives it a home, but the engine it wants is the kind of thing a single new sacrifice outlet or blink payoff can supply. Until that prints, this is a card the format has room for and no reason to run.

A two-mana artifact for Pioneer sacrifice and aristocrats shells that want another cheap token source feeding an outlet like Cauldron Familiar loops or Mayhem Devil triggers. The body of the card is fine on paper and has not shown up in tracked tournament lists this season, which is the honest read: the five-mana sacrifice removal is too slow for the format, and the token churn needs a second engine already in play to matter. Pioneer aristocrats has cheaper, more reliable fodder than this. Cut for anything that loops on its own.

A two-mana artifact that wants to be sacrificed, blinked, or looped, which is the first problem: Pauper's sacrifice payoffs run black, and the activation that fires the leave trigger costs five mana and red. The format's red removal slot already belongs to Lightning Bolt and Chain Lightning at one mana; spending five to deal three and net a 1/1 Robot is not a rate Burn or Boros Synthesis has any reason to pay. The token generation is real but slow, and Pauper's aristocrats-adjacent shells are MBC builds anchored on sacrifice fodder that comes cheaper and feeds payoffs already in those colors.

The card's whole argument depends on a second engine being in the room: a recursion piece, a blink effect, a free sacrifice outlet. Pauper doesn't have a red archetype built around that loop, and the artifact-matters deck, Affinity, wants its artifacts cheap and its payoffs concrete, not a two-mana piece that asks for setup before the math turns.

It is legal but has yet to register in tracked tournament play this season. That tracks with the structural read. There is no current Pauper archetype that values this specific churn at this cost in this color, and the format is too settled for one card to build a home around the trigger. Under a tix on MTGO, and not played at any price.

A two-mana artifact that makes a token, makes another when it leaves the battlefield, and deals 3 damage to a creature for five mana on the way out. In a format where Black Lotus pays for itself on turn zero and the interaction that matters answers combo rather than a 1/1, a five-mana Lightning Strike with a body attached is not a rate Vintage asks for. The leave trigger wants a sacrifice or blink engine the format does not run. Legal, but yet to register in tracked tournament play. Noise.

The Shock comparison flatters the activated ability: Lightning Bolt does three damage for one mana, and even the modest Shock does it for two. Five mana with a colored requirement and a card sacrifice to deal three is several leagues outside what Legacy pays for removal. The token-on-entry and token-on-exit lines want a sacrifice engine to matter, but Legacy's sacrifice shells aren't anchoring around a two-mana artifact that produces 1/1 Robots when efficient outlets and payoffs already exist at lower rates. As a two-mana play it also pays the Daze tax for a body that doesn't pressure anything. Legal, but yet to register in tracked tournament play this season. Does not clear the bar.