Mono Red Madness is an aggressive burn deck that wins through direct damage via Guttersnipe, Kessig Flamebreather, and spell triggers combined with Faithless Looting enabling Fiery Temper madness casts — your primary defense is countering their key spells and stabilizing behind your artifacts. Bring in the full package of Blue Elemental Blast and Hydroblast to counter or neutralize their burn spells and creatures, plus Red Elemental Blast as an additional counterspell or removal piece against their red permanents. The additional Krark-Clan Shaman gives you a repeatable board wipe threat against their small creatures like Voldaren Epicure and Sneaky Snacker. Cut the Nihil Spellbomb suite since graveyard hate is low-impact here — their Faithless Looting and madness synergies don't rely on a persistent graveyard — and shave the lower-impact utility cards Fanatical Offering, Hunter's Blowgun, and Makeshift Munitions that are too slow against their burn-speed clock. Prioritize deploying Myr Enforcer and Refurbished Familiar early to build a board presence that pressures them to attack rather than burn your face, and use your counterspells reactively to protect your life total from Guttersnipe triggers and Fireblast finishes.

Spy Combo wins by milling itself with Balustrade Spy and reanimating Lotleth Giant to drain you out via Dread Return, making this a pure race where your fast artifact kills are your best weapon. Galvanic Blast and your chip damage from Refurbished Familiar and Myr Enforcer need to close the game before they assemble the combo, so prioritize aggression over interaction. Extract a Confession comes in to strip a key combo piece—Balustrade Spy, Dread Return, or Lotleth Giant—and buy you the extra turn you need. Nihil Spellbomb in the main can disrupt their graveyard setup if you leave up mana, and Krark-Clan Shaman can sweep their mana walls to slow their ramp. Toxin Analysis comes out as it is too slow and reactive against a deck that wins through a single spell resolving.

Mono-Blue Terror is a tempo-permission deck that wins by countering your spells and attacking with large cheap creatures like Tolarian Terror and Cryptic Serpent while you fall behind on card development. Bring in Blue Elemental Blast and Hydroblast to counter their threats, protect your key spells from their counterspells, and generate card advantage through the one-mana interaction. Trim Toxin Analysis, Fanatical Offering, and Hunter's Blowgun since these slower, non-blue-interactive pieces are too clunky when their counters tax every spell, and Krark-Clan Shaman is largely irrelevant against a creatureless-ish permission deck with few small targets. Your Thoughtcast, Ichor Wellspring, and Reckoner's Bargain engines are critical to keep up in cards against their cantrip suite, so prioritize landing an artifact-heavy board state early to reduce the cost of your draw spells and outpace their hand sculpting.