Chalice of the Void is the biggest concern here since it can lock out your Show and Tell or Sneak Attack on the relevant number; Abrade destroys it outright as an instant-speed answer. Brotherhood's End can wipe their small colorless creatures like Glaring Fleshraker and Eldrazi Spawn/Scion tokens while also hitting Chalice of the Void and Lotus Petal via its artifact-destruction mode. Prismari Charm and Preordain are the easiest cuts since neither helps you fight through an early Chalice of the Void locking your mana development.