Consign to Memory counters their colorless artifact spells and Karn, the Great Creator's triggered activations don't apply but note it can still hit colorless spells like The One Ring or Ugin, Eye of the Storms as they're cast. Engineered Explosives can wipe their small artifact tokens and cheap permanents once set appropriately, disrupting their Urza-lands artifact shell. Force of Negation is excellent to stop Show and Tell-adjacent blowouts like Karn, the Great Creator or Ugin, Eye of the Storms for free on their turn. Boomerang Basics and Flow State are too slow and low-impact against a proactive artifact combo-control deck, so we prioritize free interaction and targeted answers.