Penance Stare

I was thinking about Ghost Rider and his signature ability, which causes Psychic harm to an individual based upon the weight of their sins, and began wondering how to stat that out in GURPS.

I figure it would be a variable innate attack with the damage amount determined by the GM. It also requires eye contact, the victim to have a soul, and they must be helpless (i.e. several seconds of unbroken eye contact).

Is this doable GURPS wizards? Or should I find a different option?