When performing a manuever, can some of the invader units decide not to move if they don't want to?
Does the order tokens, return to invader after use or are they discarded (removed from play)?
Also one the rituals say sacrifice 4 goblins, is it from your supply or from the board?
The Invader must perform a manuever, but do not need to actually move any units.
The order tokens are returned to supply after use. Unless all invader units with an order token are removed from the board before the token can be resolved. In witch case the order token is returned to the box.
Rituals are paid for with goblins from supply.