Missing sideboard cards? The full 15-card sideboard runs about $98.87.
Buy sideboard on ManapoolOcelot Pride Midrange goes wide with cheap Cat tokens and small creatures like Guide of Souls, so Brotherhood's End's sweeper mode (3 damage to each creature and planeswalker) can wipe their board of 1/1s and 2/1s in one sweep. Abrade provides flexible instant-speed removal for their small threats or can destroy problematic artifacts. Flusterstorm is a low-impact cut since their deck is creature-heavy rather than spell-heavy, and Prismari Charm's modes are mostly outclassed by the sweeper effect here. Keep Force of Will and the fast mana plan to simply go over the top with Atraxa or Griselbrand before their board state matters.
Dimir Tempo leans on Orcish Bowmasters and Moonshadow as efficient creatures, and Abrade can kill either outright or destroy Mishra's Bauble before it draws a card. Consign to Memory counters Orcish Bowmasters' and Kaito's triggered abilities, blunting their disruption and card advantage. Flusterstorm is a weaker option here since Dimir Tempo's threats are creatures rather than a storm of spells, while Omniscience is too clunky against their Wasteland-backed tempo plan that punishes slow draws. Hold Force of Will for their Murktide Regent or key threats to keep your Sneak Attack/Show and Tell plan on schedule.
This matchup is a Show and Tell mirror with an Aluren package attached, so Consign to Memory is a strong bring-in. It counters triggered abilities such as Atraxa's enters-the-battlefield trigger, Acererak's triggers, or Emrakul's extra-turn cast trigger, and it can also hit colorless spells like Lotus Petal. Emrakul itself can't be countered, so aim Consign at its cast trigger rather than the spell. Grafdigger's Cage stays in the sideboard: it only stops creature cards from entering the battlefield from graveyards and libraries and stops casting from those zones. It does nothing against Aluren, which casts creatures from hand for free, and neither deck leans on graveyard recursion. Omniscience is too slow when both decks are racing to resolve a single giant threat first via Show and Tell or Sneak Attack, so those slots go to Consign to Memory. Flusterstorm stays in because it can still answer their Show and Tell, Ponder, Brainstorm and Stock Up.