He was droll, engaging and a master of grand illusion and platform magic. The wit of his patter marked a departure from the pseudo scientific style of earlier conjurors. This humour can still delight, as evidenced by stage lines he includes in the treatise he wrote with Nevil Maskelyne, "Our Magic". It has been claimed that Queen Alexandra laughed aloud during Devant's "A Boy, Girl and Eggs" routine at the first of his Royal Command Performances, where an assistant from the audience was given the (losing) task of keeping track of a bewildering number of eggs plucked from an empty hat by the magician.