Jeskai Artifacts relies heavily on artifact synergies like Goblin Welder, Goblin Engineer, Mox Opal, and Urza's Saga, making artifact destruction extremely valuable; Ingot Chewer's evoke mode cheaply blows up a key artifact like Mox Opal or a Construct token created by Urza's Saga (the Saga itself is an enchantment land, so it can't be targeted). Trumpeting Carnosaur gives us a big discover-5 threat that outsizes their small creatures like Emry, Lurker of the Loch and Pinnacle Emissary's Drone tokens, and its activated mode can kill those small bodies directly. Tibalt's Trickery is unreliable against a deck that often casts cheap, replaceable artifact spells, so it isn't worth the slot, and Maelstrom Wanderer is too slow against a deck that can rebuild its board quickly via Goblin Welder recursion. Keep the rest of our proactive cascade plan since racing their slower artifact value engine is generally favorable.