Missing sideboard cards? The full 15-card sideboard runs about $103.
Buy sideboard on ManapoolRelic of Progenitus can proactively exile their graveyard before Sneaky Snacker can return to the battlefield, and later cracking it strips flashback fuel from Faithless Looting and Lava Dart while drawing a card. Mana Tithe disrupts their curve by taxing an early Voldaren Epicure, Kessig Flamebreather, or Guttersnipe when they're tapped out. Salt Road Packbeast is our slowest, most mana-hungry creature and comes out since this matchup is a race against a fast clock. Keep the low curve and removal (Dispatch) intact to answer Guttersnipe and Flamebreather before they snowball damage.
Thraben Charm's graveyard-exile mode and its damage mode (equal to twice your creature count) give flexible answers to Baleful Strix and small blue creatures like Faerie Seer and Augur of Bolas, while also disrupting their Dimir Aqueduct/Bojuka Bog grindy recursion plans. Clowning Around's tokens are too slow and low-impact against a deck full of efficient removal (Snuff Out, Cast Down, Agony Warp) and counterspells, so it comes out. Keep Dispatch as premium removal for Baleful Strix and Spellstutter Sprite. This is a grindy matchup where card advantage and resilient threats matter more than go-wide swarming.
This opponent's mana engine runs on Overgrown Battlement, Saruli Caretaker, and Wall of Roots, all of which are artifact-free so Dust to Dust can't hit the dorks directly, but it can exile their Lotus Petal and any incidental artifacts; keep it mainly as flexible interaction while leaning on our aggressive clock. Peach Garden Oath gains life for each creature we control, buying time against their big Generous Ent and Troll of Khazad-dum swings. Clowning Around and Guardians' Pledge are cut since this matchup rewards pressuring their slow ramp rather than going wider with tokens that don't outrace Dread Return reanimation. Prioritize racing before Balustrade Spy and Dread Return assemble a large graveyard-fueled board.