Getting the trigger multiple times on each end step is tricky, but doable if you leverage politics alongside cards like Hunted Horror, or simply muck things up with cards like Bloodchief Ascension and Vile Consumption that burn your opponents on their turn
With other complementary artifact mana sources like Thran Dynamo and Grim Monolith, decks could count on being able to get the kind of mana you'd need to justify packing the cards that would let you use the mana from Metalworker to deliver the knockout blow, and their presence lets you turn that Metalworker mana into permanent giant amounts of mana rather than just a one shot deal
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Part of this feeling was my unwillingness to add staples like Clock of OmensClock of Omens and Intruder AlarmIntruder Alarm to my deck
(Scryfall note) If the target is illegal as the spell tries to resolve, perhaps because it has been removed from the graveyard, you will not create a Food token
2/4 Illustrated by GodMachine
