Spectre's text reads "While Spectre is active, all character dice except Spectre must attack this turn." It does not add (if able) as most similar cards do. So does this card overrule abilities that prevent character dice from attacking? For example, there's a Pepper Pots that can't attack. Does Spectre take that away and force her to attack?
Related question. Kitty Pryde - Shadowcat has a global that reads "Pay *mask*. Target character cannot attack this turn unless its owner pays 1 life." If Spectre is active and I use this global, does it force my opponent to pay 1 life, because Spectre is forcing it to attack?