Sneak and Show wants to resolve Sneak Attack or Show and Tell into Emrakul, the Aeons Torn or Griselbrand, so proactive hand disruption via Thoughtseize and Unmask is premium — keep those at full count. Collective Brutality adds another discard mode that can also strip a copy of Force of Will from their hand (escalating to discard a second card) when they're tapped out protecting their combo. Cabal Therapy is less reliable here since it's sorcery-speed and they often hold up Force of Will, so trimming two copies for Collective Brutality's flexibility (discard mode plus a -2/-2 if they flash in a blocker) is a slight upgrade. This matchup is a straight race to resolve our own reanimation target first, so don't cut any Dark Ritual, Reanimate, or Animate Dead.