Alpha Alpha Alpha Wolf
 

Card text of Alpha Alpha Alpha Wolf says "This gains 1 power for each Monster in your stash". Many of the Monsters that go into your stash are face down, and not known to be monsters to your opponent. Do only face up monsters count for this power buff, or do you have to reveal your face down cards to prove them to be monsters?

Re: Alpha Alpha Alpha Wolf
 

Face-down cards have no characteristics other than being cards for the purposes of game rules. It doesn't matter whether you or your opponent knows what a card is. If it's face-down, it's not a monster, it's just a face-down card.