Izzet Spellementals relies on graveyard-fueled discounts for Eddymurk Crab and Hearth Elemental, plus Flow State's upgraded two-card mode, so Rest in Peace exiling graveyards cripples both the cost reduction and their card selection. Torpor Orb shuts off the enter-the-battlefield triggers on Eddymurk Crab (tapping our creatures) and Sunderflock (bouncing our non-Elemental creatures), severely blunting their tempo swings; it does nothing against Hearth Elemental, which has no enter-the-battlefield trigger. Boomerang Basics and The Mind Stone are too slow against a deck that wants to race with cheap spells, so they come out for the proactive hate pieces. Keep the artifact engine (Simulacrum Synthesizer, United Battlefront) intact since it still outgrinds their spell-heavy game plan.

UR Aggro wins by chaining cheap cantrips into Slickshot Show-Off pumps, so Voice of Victory shutting down their ability to cast spells on your turn protects your life total and tempo plays directly. Rest in Peace exiling graveyards denies Eddymurk Crab and other spell-count discounts their fuel, slowing their curve significantly. Boomerang Basics is far too slow against a deck this fast, and Candy Trail doesn't impact the board quickly enough to matter. Prioritize Perilous Snare and Pinnacle Starcage to answer Slickshot Show-Off and Elusive Otter before they snowball.

Dimir Midrange's Floodpits Drowner and Dream Beavers both rely on enter-the-battlefield triggers, so Torpor Orb turns off the stun-counter lockdown from Floodpits Drowner and neutralizes value from creatures like Dream Beavers. Negate is well-positioned against their noncreature spells like Requiting Hex, Bitter Triumph, and Kaito, Bane of Nightmares, but it can't hit creature spells such as Enduring Curiosity. Boomerang Basics is weak here since it just returns their threats to be recast with value triggers again, and Braided Net is too passive against a deck with real card advantage. Keep Perilous Snare in to deal with Kaito, Bane of Nightmares, and keep Pinnacle Starcage in to sweep up cheap threats like Spyglass Siren.