If an action doesn't exhaust the card that it is on, can you use it multiple times per turn.

Example = Hastur

Action: Pay 3 to choose a character. That character goes insane.

Can I use that multiple times per turn as long as I have the domains to drain?

yes you can, just like with pulp writer or mentor to vaughn.

Thanks that is what I thoght, but just wanted to be sure.