Your symbols wouldn't work- [He pauses mid-question, before remembering something from the guide at the mention of 'summon'.]

Right... that kind of symbology wouldn't work here.

[Summoning spirits was far beyond what he would ever be capable of, so he'd glossed over it a bit. He offers a bit of a grin, musing quietly to himself.]

I don't think I ever asked in detail just what you can do, but I'm not surprised you can pull off something like that.