Quick grammar question

Didn't really think this deserved to be in an english forum or anything since it's just a quick question so I shoved it here

Can anyone tell me which of these makes sense, if any, or both?

"I am a faustian"

"I am faustian"

I've never really written it before, I wasn't sure which would make more sense.

Thanks,

Jorge x

Thanks for the precise answer, I was more drawn to the second one but good to have it confirmed.

Will rep ya x