Mainboard (60)
Instants (22)
Sorceries (5)
Artifacts (3)
Enchantments (4)
Gruul Goblins is an aggressive tribal deck that wins through explosive starts via Goblin Lackey and Goblin Warchief enabling hasted Goblin Piledriver and Siege-Gang Commander. Your priority is surviving the early game with Swords to Plowshares and Wrath of God, then stabilizing behind Standstill once the board is clear. Hydroblast and Blue Elemental Blast answer key threats like Goblin Piledriver and Siege-Gang Commander while also being able to counter Goblin Lackey triggers. Circle of Protection: Red and Warmth provide insurance against burn-heavy draws and Siege-Gang pings that can otherwise kill you through a stalled board. Phyrexian Furnace is low-impact in this matchup, Humility loses value since you're boarding in creatures and goblins often go wide anyway, and the extra Prohibit is cut since most threats cost more than two mana.
This matchup revolves entirely around their Phyrexian Dreadnought plus Stifle combo; Meddling Mage naming Stifle is your most impactful play, as it forces them to sacrifice 12 power worth of creatures to deploy the Dreadnought and shuts down their entire win condition. Arcane Laboratory is a second key piece: since their combo requires casting both Dreadnought and Stifle in the same turn, the enchantment makes that line impossible and forces them to find an answer before advancing. Counterspell, Prohibit (which efficiently counters Stifle on its own), and Swords to Plowshares remain your core interaction, and Humility is a powerful standalone answer that reduces the Dreadnought to a 1/1 if it resolves. Phyrexian Furnace, Disenchant, and Powder Keg come out because their deck runs no meaningful graveyard plan, few relevant artifacts or enchantments, and no creatures in the one-to-two mana cost range that Powder Keg could efficiently answer.
Enchantress is a combo-control deck that wins by establishing card draw engines (Argothian Enchantress, Enchantress's Presence) and then either beating with Opalescence-animated enchantments or locking you out with Solitary Confinement. Your counterspells are well-positioned here — prioritize countering Enchantress's Presence, Serra's Sanctum, and Opalescence, as resolving any of these can make their engine snowball out of control. Meddling Mage naming Opalescence or Enchantress's Presence shuts off their most threatening lines and forces them to answer it with Seal of Cleansing or Swords to Plowshares before proceeding. Arcane Laboratory is a powerful lock piece that prevents them from chaining multiple enchantments per turn, which is the core of how their engine functions. Phyrexian Furnace and Powder Keg come out as they have minimal impact — Furnace does nothing against an enchantment deck and Keg is slow against their permanent-based threats.