0/10 because no thought to balance or thematics were given in the design of this and all other masks. I am cursed to forever see ____ Mask played in every single boring deck people play until the end of time because it's blatantly broken. Truly a terrible fate until I get tired of it and stop playing Arkham Horror.
Seriously though, I really hate these masks. Events and skill cards are the more interesting types of cards, and these diminish their use by virtue of being a ridiculous stat boost.