“Selesnya Enchantress is a combo-control deck that leverages Argothian Enchantress and Enchantress's Presence as card draw engines, chaining enchantment plays to generate overwhelming card advantage. Serra's Sanctum provides explosive mana acceleration by tapping for one mana per enchantment in play, while Solitary Confinement serves as the primary lock piece, becoming effectively indestructible when the enchantress draw engine is running and supplying a fresh enchantment each turn to pay its upkeep. Sterling Grove protects the engine pieces from disruption while also tutoring for any enchantment needed to complete a combo or shore up a specific matchup.”
Missing sideboard cards? The full 15-card sideboard runs about $292.
Buy sideboard on ManapoolSwords to Plowshares is largely dead since the deck has almost no creatures besides the one-shot Phyrexian Dreadnought, and Opalescence is a slow, clunky answer against a deck trying to kill in two attacks. Aura of Silence taxes their Phyrexian Dreadnought and Powder Keg while giving us an on-board answer to destroy Dreadnought, all while triggering our Enchantress engine. Tormod's Crypt strips their graveyard to shut off Gush-fueled Flash of Insight flashback and any graveyard shenanigans, cast for free before they can react. Krosan Reclamation lets us shuffle key enchantments like Sylvan Library or Wild Growth back into our library if they end up discarded or milled, buying us another draw off Gaea's Blessing-style recursion later. Keep Abeyance and the rest of the counterspell-proofing suite untouched since racing them on board isn't the priority.
Mono-Red Sligh wants to race you with efficient burn and aggressive creatures, so extra copies of Swords to Plowshares answer their best threats (Grim Lavamancer, Goblin Vandal, Mishra's Factory) cheaply while gaining life to offset their reach. Xantid Swarm is a 0/1 and too fragile to block profitably, but its attack trigger shuts down the opponent's spell-casting entirely for a turn when you need time to assemble your engine. Opalescence is too slow and vulnerable to their damage-based removal in a matchup decided by tempo, and the extra Replenish doesn't help since you're unlikely to be reanimating a full enchantment suite before dying. Solitary Confinement remains a strong stabilizer against their damage-based clock.
This is the mirror match, so the game is decided by who assembles Serra's Sanctum and the enchantress engine first while disrupting the opponent's manabase and card advantage. Krosan Reclamation rebuys key enchantments like Sterling Grove or Enchantress's Presence after their Seal of Cleansing or Aura of Silence answers, keeping your card advantage engine alive longer than theirs. Gaea's Blessing serves a similar role, shuffling key enchantments back into your library while replacing itself, and also protects your graveyard from any Tormod's Crypt or Krosan Reclamation they bring in. Parallax Wave and the extra Replenish are cut since both players' boards are mostly bodyless enchantments, making Parallax Wave's exile largely irrelevant.