Mainboard (60)
Creatures (18)
Instants (9)
Sorceries (8)
Artifacts (2)
Lands (23)
Gruul Goblins is a fast tribal aggro deck that can overwhelm you with Goblin Lackey on turn one and close quickly with Goblin Piledriver and Siege-Gang Commander. Engineered Plague naming Goblin shuts down their entire board presence, neutralizing Piledriver, Warchief, and Ringleader simultaneously — it is the most impactful card in the matchup. Spinning Darkness provides additional cheap removal for early threats like Lackey, conveniently exiling rather than putting cards into the graveyard. Cursed Scroll is too slow and mana-intensive against their explosive starts, and Smother loses some value since Goblin Warchief and Siege-Gang Commander are out of range, while Plaguebearer is redundant with Engineered Plague. Priority use Cabal Therapy and Duress to strip Goblin Lackey or Goblin Matron before they resolve, and Withered Wretch disrupts any Goblin Ringleader chain by exiling the graveyard at instant speed.
Mono-Blue Stiflenought aims to land a Phyrexian Dreadnought by using Stifle to counter the sacrifice trigger, creating a 12/12 trample for just one mana. Your discard suite of Duress and Cabal Therapy is excellent here — strip Stifle and counterspells before committing threats to the board. Knight of Stromgald loses most of its value since there is no White to protect against, so bring in Spinning Darkness as a free instant-speed answer to the Dreadnought if one resolves. Hypnotic Specter is your best threat since it dodges Smother and pressures their hand; protect it through their counterspells by clearing the way with discard first. Wasteland can attack their Island-heavy manabase and disrupt their ability to hold up Counterspell and Foil simultaneously.
Enchantress is a combo-control deck that wins by assembling card draw engines (Argothian Enchantress, Enchantress's Presence) into overwhelming card advantage, then closing with Opalescence or locking you out with Solitary Confinement. Gloom is your most powerful tool here, taxing every white spell including Seal of Cleansing, Swords to Plowshares, Parallax Wave, and Solitary Confinement by three colorless mana, often making them uncastable on curve. Dystopia attacks their green and white enchantments directly, destroying a permanent each of your upkeeps and threatening to dismantle their engine over time. Duress and Cabal Therapy are critical in this matchup to strip Sterling Grove, Replenish, and Solitary Confinement before they resolve; prioritize hitting Grove early since it protects their entire board. Withered Wretch and Cursed Scroll come out as they have poor impact against a deck with minimal graveyard reliance and life gain is not a meaningful concern here, while the extra Diabolic Edict and Plaguebearer give you additional ways to pressure their creatures if Opalescence animates their enchantments.