Damping Sphere cripples Ancient Tomb, Eldrazi Temple, and Cavern of Souls by capping them at one mana each, badly slowing their explosive starts, and it taxes their many one-mana-value colorless spells if they chain them. Surgical Extraction can strip a Thought-Knot Seer or Reality Smasher off the top of their draws once one hits the graveyard, and helps fight Kozilek's Command recursion. Kaito comes out since it dies to Kozilek's Command exile and doesn't pressure their big colorless bodies well; the two extra fetches are cut since Wasteland effects matter less and we want fewer cracks into Eldrazi Temple mana. Watch out for Chalice of the Void on 1, which can lock out Fatal Push, Thoughtseize, and Brainstorm.