[Aerozord]

here is what I was thinking, a monster whose combat is more based on mental attacks. Someone thats more useful as support, probing an enemies mind, establishing telepathic communication, making illusions, ect. In fact I was going to have the feeding be an attack since it would be something like we have to be looking at each other, alternately generating illusions or telepathy, doing violent and horrible things, and other tactics to create sanity eroding trauma. I could scale it back to physical contact of course. Amount depends on how often we have to feed. Personally I measure it as number of people. If another monster needs to slay one human, figured me stripping one persons mind would be equivalent

Act of feeding strips away ability to separate reality from imagination, as well as past and present. Those partially stripped cant even be sure I attacked, even best live in a world filled with far worse imagined horrors, the worst, those completely stripped of sanity are vegetables. Their minds no longer coherent enough to facilitate anything more complex then twitching while inside their head is an insanity filled nightmare as their mind tries in vain to comprehend the horror of pure chaos.