[ Nate leans forward a bit, watching the gestures. They're not familiar to him, but after a moment, he moves his own hand through a series of gestures, and circles of flame start to cycle his fingers, his hand, his wrist. ]

Gestures or movements can make spells, like tracing symbols in the air instead of speaking the words, or drawing them on the ground. I don't recognise what you're using, though.

[ He closes his hand into a fist, and the flame rings wink back out. ]