[ That smug smile is still on Strange's face as he answers Rita's questions in a self-important, puffed up sort of tone. Not only does he love showing off but he loves talking about magic. The combination of showing off and talking shop is enough that even though their first five minutes got off so terribly, Strange is already warming up to Rita. ]

It was English magic—my specialty. And yes, I used an incantation. Most of my magic requires me to do so. As for your last question, I drew power from nature and the world itself.