Meteor

[Kristal]

Actually, it would be quite hilarious if Prism Staff worked on this. That would turn it from an item that was designed to reduce inventory strain into an item that simply adds to it, because for maximum efficiency you'd have to have eight other staves plus this one for Meteor.

I don't think it's that unlikely. Neutral Attack Bonus has been in the game for a while, so Affinity: Neutral would cover Meteor.

Also, Prism Staff isn't meant for maximum efficiency but maximum economy.