Domain Zoo is a tempo-aggressive deck that curves out with powerful creatures like Ragavan and Territorial Kavu backed by Leyline of the Guildpact enabling Leyline Binding and Scion of Draco. Your gameplan is to go under them with your burn-and-cantrip engine, racing their threats with direct damage and a quickly-leveled Stormchaser's Talent or Cori-Steel Cutter. Subtlety comes in to tempo off their key threats like Scion of Draco or Ragavan without spending mana, keeping your burn mana open. Brazen Borrower provides a bounce effect for a resolved Scion of Draco or Leyline Binding while adding a threat. Mutagenic Growth loses value as their Consign to Memory and Stubborn Denial can punish you during your attack, and a copy of Boomerang Basics is trimmed since they run a robust multicolor manabase that's less punished by basic land disruption.