Mardu Aggro vs Sultai Aluren

Leyline of the Void can be set up for free in the opening hand and shuts off Atraxa, Grand Unifier recursion and any graveyard plans, while Containment Priest stops Show and Tell and Aluren from cheating Atraxa or other creatures into play untouched by sorcery-speed removal. Cabal Therapy loses value since this deck has few creatures to discard-check against and no reliable graveyard synergy to protect, and Goblin Bombardment's sacrifice outlet is low-impact against a deck that isn't attacking with small creatures. Race their big mana plan by applying pressure early with Thoughtseize and Swords to Plowshares backing up the aggressive clock. Keep Wasteland in to punish their nonbasic-heavy manabase including City of Traitors and Ancient Tomb.