One. 

The mask continually rejects him. He has to earn it. How, well, that can be decided eventually. Not rejected all the time, just enough so that it's not overpowered.

That's all I can think up for the moment

I'm going to bed now since I've been awake 20 hours and my head hurts and my body hurts. 

If you agree with that, then I'm happy to vote yes, unless any of the others have any issues