Izzet Spellementals is a tempo-combo deck that uses Sunderflock and Hearth Elemental as its primary threats, backed by a suite of cheap interaction like Traumatic Critique and Burst Lightning. Your sweepers (Day of Black Sun, Deadly Cover-Up) are largely inefficient here since their threats are fast and their burn can close before you stabilize, so trim those in favor of countermagic. Flashfreeze and Disdainful Stroke answer their key payoffs cleanly, while the additional Duress copies let you strip Spell Pierce or Winternight Stories before resolving your own threats. Keep Deceit and Requiting Hex as your primary card advantage engine — the game often comes down to who runs out of resources first, and Dimir's card quality edges out Izzet in a longer exchange.

Mono-Green Landfall is a tempo-aggro deck that chains land drops to fuel Earthbender Ascension and a board of growing threats like Mightform Harmonizer and Bristly Bill, Spine Sower. Flashfreeze is the premier answer here, cleanly countering their entire creature suite and key pump spells at instant speed for two mana. Annul comes in specifically to preemptively answer Earthbender Ascension before it snowballs, and Disdainful Stroke catches their top-end threats like Mightform Harmonizer. Trim Strategic Betrayal since single-target edicts are inefficient against their wide board of small creatures, and cut one Duress as it misses creature spells, while also trimming one copy each of Intimidation Tactics and Winternight Stories as they are too slow when you need to stabilize early — lean on Requiting Hex and Day of Black Sun as your primary board stabilizers.

Jeskai Control wins through incremental card advantage via Tablet of Discovery, Stock Up, and Jeskai Revelation while using Firebending Lesson to generate a board presence; your goal is to strip their key spells before they resolve and then land a threat they can't answer. Bring in all four extra Duress copies (two from sideboard) to attack their hand early and dismantle their countermagic suite, and add Disdainful Stroke to tax their expensive draw spells and any sideboard Sphinx of the Final Word. Oildeep Gearhulk and Quantum Riddler come in as resilient, card-advantage-generating threats that are difficult for a primarily spell-based deck to interact with efficiently. Cut Shoot the Sheriff, Day of Black Sun, and Intimidation Tactics as they have almost no valid targets in Jeskai's mainboard, and trim Winternight Stories and one Bitter Triumph since those are too slow and passive against an active permission and draw engine. Post-board, prioritize deploying discard in the early turns, then follow with a hard-to-answer threat while leaving up your counterspells — the player who resolves the first unanswered card advantage engine typically wins this matchup.