Versus Simic Rhythm at 38% (your disadvantage), they out-tempo you with Nature's Rhythm, Gene Pollinator, Spider Manifestation, and Craterhoof Behemoth. Soul-Guide Lantern disrupts their graveyard sideboard cards. Harvester of Misery removes their key accelerators and must be deployed early. Requiting Hex provides recursive pressure. Spider-Sense draws into your threats faster. Day of Black Sun is too slow against their explosive ramp, Glarb, Calamity's Augur doesn't apply pressure fast enough, and Annul has no targets.