Be quick before I change my mind and think of something worse!"  Dave didn't see what he did this time, but there was a puff of flame in front of his eyes.
He was a wizard with power over all flames. 
mnli hypothesis: He was a wizard with power over all flames.  premise: Be quick before I change my mind and think of something worse!"  Dave didn't see what he did this time, but there was a puff of flame in front of his eyes.