Missing sideboard cards? The full 15-card sideboard runs about $42.23.
Buy sideboard on ManapoolMono Red Madness races via Voldaren Epicure, Kessig Flamebreather triggers, and burn to the face, so Weather the Storm's lifegain (amplified by Storm off our own spell chains) buys crucial turns. Drown in Sorrow sweeps their many 1-2 toughness creatures (Voldaren Epicure, Guttersnipe) for -2/-2. Campfire is too slow against this clock and Tithing Blade's sacrifice-a-creature trigger is a whiff against a deck with few creatures, so both come out. Bojuka Bog trims since graveyard hate does nothing against their madness plan (Fiery Temper is exiled, not in the graveyard).
Duress strips Counterspell or a key mill/cantrip piece before they can protect Tolarian Terror or Cryptic Serpent. Faerie Macabre's discard ability exiles cards from their graveyard, directly denying the cost reduction that makes their Serpents cheap threats. Tithing Blade and Campfire are weak here since the deck has few creatures to sacrifice and this matchup is about card quality, not racing on life total. Spinning Darkness is awkward since its alternate cost requires exiling the top three black cards of your own graveyard, and its 3 damage cannot kill Tolarian Terror or Cryptic Serpent.
Tron's game plan revolves around ramp artifacts like Expedition Map, Bonder's Ornament, and Barrels of Blasting Jelly, so Troublemaker Ouphe (when bargained) can exile a key piece of their mana or value engine. Tithing Blade is weak here since Tron runs very few creatures early, making the sacrifice trigger frequently a blank. We otherwise keep our removal and graveyard hate (Nihil Spellbomb, Bojuka Bog) since our plan is to out-grind their slower ramp shell with efficient removal and card advantage.