Magical Question

I'm currently digesting a bit of material from a workshop on fire magic that I attended over the weekend, and I was wondering if anyone here would happen to have a working knowledge of southern conjure magic and a technique known as "seizing the serpent" (possibly "seizing the sun serpant" or "seizing the sky serpent") from that tradition? I may end up contacting the presenter directly with some questions about it, but I'd really like to get some outside perspectives and also verify that the information I was already given by this presenter is correct. (I like the guy a lot, I really enjoy his work, but I try to verify what I can independently as a matter of course. Trust but verify works in magic too.)