Ω of Personamancy?

Hello! One of my players is wanting to play a Personamancer, so I'm updating the school for the third edition. I've left most of it the same — just swapped out Mind, Soul, etc. for identities and abilities, that sort of thing.

My player is, however, wanting to add a blast to the school, similar to first edition. I'm completely inexperienced when it comes to homebrewing Unknown Armies, though, so I turn to you all: **what would the Ω of Personamancy be, for the purpose of calculating the cost of the minor blast? And what are some cool ways the blast could manifest?**

Since the charging mechanism is pretty simple and the taboo is only moderately restrictive, my first thought was to put Personamancy at Ω+1. This number doesn't seem to jibe well with some of the second edition spell costs, though, so I wanted to get y'all's opinions.