The problem is Xykon later used a Still Meteor Swarm in a situation where he shouldn't be able to, so it doesn't fit neatly into the epic rules, and since we don't know what Rich was thinking at this point, we can't note it right now.
This was disputed because of the idea that Qarr is not actually a Familiar, but only pretending to be on the IFCC's orders, Qarr's statements about his plans overrulling Z's assertion about having a familiar.