He shall then enflame himself and use that force to form a solid image of himself
Let him continue to add force to that image to make it more conspicuous. Multiple images may be made of himself, and sent to other places where he wishes to be perceived.
Let him also enhance this operation with the use of Blur on himself.
This works especially well on those with the Sight who are directly seeking him. The images act as decoys to distract enemies and even absorb magical damage sent the Mage's way.