'Twas a gravity spell. I had considered a binding spell I recently learned instead, but I felt the former might be the more reliable method, given the circumstances.

[With his diminished aether, they'd be likely to break the chains in short order, while gravity would simply work against their sizes. Themis looks just as thoughtful, pursing his lips.]

I suppose it would be fair to assume our schools of magic differ greatly. Can you tell me more about what you know?