One more question (I hope ):

How much would said "super trait" cost me in flaws? (How many flaws would I have to add for it?)

Well it's settled I shall play a Guardsman that can play a sweet Imperial Guitar but do absolutely little else and contribute nothing at all to the story?

Sound good?

None. Super Trait is what makes your char all craaaaazy

Sure why not.

COULD I be a insane techmarine whos completely lost all sense of reallity?

Just gonna guess... It's that Maxis guy from that old, crazy RP with the teleporting servo harness isn't it?

So this?

Would a daemonically-possessed Eviscerator be acceptable? If so, would being enveloped in Warpfire while active or enhancing its user's abilities be the super trait? Or would it be acceptable to simply merge both of those into a single super trait?

Think we also need a Blood Raven to come in and steal all the relics?

who do you think i am?

You so much as try to steal me and I'll shred your mind with visions of the Warp.