So, as I just found out on the OOC thread, apparently posting the address of a particular post on a line of its own quotes it?
I agree Viola's the best of the covenant magi (at least know that Stephen's gone - his Rego specialisation might have given him the edge). The alternative plan is to get a Verditius involved, especially as there was already some discussion of getting Viola building a spyng device - although the latter is technically less urgent, as it could be done after the mission at a pinch.
There's some discussion of the concentration question here: Magic item maintaining concentration