Mainboard (60)
Creatures (25)
Instants (4)
Sorceries (8)
Artifacts (2)
Dimir Tempo leans on Thoughtseize to strip your threats early, then closes with Murktide Regent and Nethergoyf backed by Force of Will and Daze countermagic. Pyroblast answers their blue threats and punches through countermagic on your key spells. Gaddock Teeg shuts off Force of Will, Toxic Deluge, and Kaito while being difficult to remove with Fatal Push (it's a 2/2). Static Prison and Hexing Squelcher come out as they're too slow or low-impact against a tempo deck that's applying pressure and disruption simultaneously. Protect your early creatures — Ocelot Pride and Voice of Victory generate enough token advantage to outpace their removal suite if left unanswered.
Oops! All Spells is a pure combo deck that wins on turn one by milling its entire library with Balustrade Spy or Undercity Informer and reanimating Thassa's Oracle or using Dread Return. Leyline of the Void is your best hate piece — if it's in your opening hand, it shuts off Narcomoeba triggers, Bridge from Below, and Dread Return entirely, making their primary line essentially impossible. Containment Priest backs this up by preventing reanimation and exiling creatures that would enter from the graveyard, giving you a clock while disrupting their backup lines. Thalia, Guardian of Thraben is already excellent here, taxing their rituals and cantrip-style spells to slow them down enough for your permanents to matter. Sand Scout and Hexing Squelcher come out as their tap-down effects are irrelevant against a deck with no attackers, and Static Prison does nothing against a stack-based combo that doesn't rely on individual permanents staying in play.
Sneak and Show is a combo deck that wins by cheating Emrakul or Atraxa into play via Show and Tell or Sneak Attack, so your priority is disrupting those two vectors before they can resolve. Gaddock Teeg is your best card in this matchup — it hard-locks Show and Tell (CMC 4) and Sneak Attack (CMC 4) simultaneously, so deploying it early under Thalia's tax pressure is often game-winning. Containment Priest shuts down Sneak Attack entirely since creatures it puts into play never enter from a graveyard or library the normal way, and also answers any Show and Tell target that tries to enter. Pyroblast is versatile interaction that hits Show and Tell, Sneak Attack, Brainstorm, Ponder, and Force of Will on the stack. Goblin Bombardment, Static Prison, Hexing Squelcher, and Sand Scout come out as they are too slow or irrelevant against a deck that can win on turn two through a resolved threat.