Domain Zoo relies heavily on the colorless Scion of Draco as a top-end threat, and Consign to Memory answers it for one mana (with Replicate scaling to hit multiple targets), making it a premium include here. Surgical Extraction can strip copies of a key card like Territorial Kavu once it is in the graveyard. Spell Snare is much weaker since their curve is full of 1-drops (Ragavan, Thoughtseize) and expensive Leyline Binding, so it whiffs often. Subtlety comes out because bouncing a creature spell to the top or bottom of their library is low-impact against an aggressive deck that just replays threats and continues attacking, and this deck wants to be casting cheap interaction and pressuring with its own Ragavan and Dragon's Rage Channeler rather than pitching cards for evoke creatures.