Dune
What can the Bene Gesserit Voice command?
Before plans are revealed, the Voice may say to play or not play a card type, such as a poison weapon, projectile weapon, lasgun, shield, snooper, a worthless card or a Cheap Hero. It can't name a leader or the dial, doesn't affect the Kwisatz Haderach, and can't force a card the target only has via an ally.