Domain Zoo floods the board with efficient cheap creatures like Wild Nacatl, Territorial Kavu, and Ragavan, making Wrath of the Skies a great sweeper that can be paid up to clear their cheap creatures (mana value 1 or 2) for a modest energy investment, though Scion of Draco has mana value 12 and will usually survive it. Quantum Riddler is a slow five-mana play in a matchup where the sweepers do more work, so it comes out. Mystical Dispute costs only {U} against blue spells like Stubborn Denial or Spell Pierce, and counters them unless their controller pays {3}. Teferi is a slower play that only handles one creature at a time with its -3, so one copy comes out to make room for the sweepers; keep Solitude and Fatal Push as premium answers to their small aggressive creatures.