"I've been able to turn into smoke for months now," Strange responds, in a sort of 'duh' tone of voice. This fire magic might be new, but at least there's precedence for Strange turning his entire body into weird elemental shit.

"As for the fire form, that's the Mother of Invention's handiwork. I don't think I mind, though I certainly need more time to work out what all I can do with it."