Missing sideboard cards? The full 15-card sideboard runs about $18.95.
Buy sideboard on ManapoolDimir Tempo wants to strip our hand with Thoughtseize and protect a resilient threat like a flipped Tamiyo with Force of Will and Daze, so we bring in cheap, efficient answers that dodge their countermagic pressure. Consign to Memory can strip away a colorless spell like Mishra's Bauble itself or counter a relevant triggered ability, while Lightning Bolt and Twinshot Sniper's enters-the-battlefield trigger give us clean answers to Bilbo, Thief in the Night, Nethergoyf, and Moonshadow before it grows out of range. Abrade gives us another flexible answer, either burning down one of their creatures or picking off an artifact like Mishra's Bauble. Pinnacle Emissary, Chromatic Star, and Skateboard are our weakest, most passive pieces here since they do little to fight through countermagic or answer their evasive threats, so they make room for this more proactive, disruption-focused package.
Eldrazi's Chalice of the Void blanks our entire 0-mana suite (Lotus Petal, Mishra's Bauble, Mox Opal, Urza's Bauble) if set to 0, and Disruptor Flute naming Chalice of the Void stops nothing once it's already on the battlefield with counters — instead name Kozilek's Command or Thought-Knot Seer to blunt their interaction, since Disruptor Flute's tax also hits recasting. Haywire Mite can exile a resolved Chalice of the Void before it locks us out. Urza's Bauble is cut since it's a low-impact 0-mana spell that dies to Chalice set at 0. This matchup is a race against their colorless beaters, so keep artifact recursion (Goblin Welder/Engineer) to rebuild through Chalice.
Ocelot Pride Midrange grinds value off Guide of Souls and Ocelot Pride triggers plus Ajani, Nacatl Pariah; Pithing Needle can shut down Ajani's activated abilities or a problematic Karakas. Portable Hole answers early threats like Guide of Souls, Ocelot Pride, or Ajani himself for mana value 2 or less. Consign to Memory can counter a Static Prison trigger, or any colorless spell they sneak in. We keep the full artifact engine intact since Wasteland pressure means we need to rebuild quickly, and this matchup is more about racing than durdling.