Annul is strong against WUBG's noncreature-spell-light but enchantment/artifact-relevant cards like Oath of Druids and Sphere of Resistance, countering them before they resolve. Black Vise is weak here since this deck doesn't rely on emptying its hand quickly and its Wasteland/Rishadan Port suite can disrupt your mana development instead. Stasis is especially powerful since, with untap steps skipped, it denies them the mana to reactivate Treetop Village or Mishra's Factory. Note that Terravore's size depends on the number of land cards in all graveyards, not on combat, so Stasis does not stop it from growing; deal with it using Chain of Vapor or Fire/Ice instead. Keep Chain of Vapor in to bounce problematic nonland permanents like Oath of Druids, Sphere of Resistance, or Terravore (an animated Treetop Village or Mishra's Factory is still a land, so it can't be targeted).