Tulpa

‘What was the winged creature that appeared to the magowie?’ I asked. ‘The one that seemed to bring me back to life. They called it an angelus. Was it some sort of angel?’

‘No, Tom, it was a tulpa. It’s the name for a magical thought-form. You create such a creature using your imagination. At first it just lives inside your head, but in time you can project it outside yourself so it has substance in the real world. Lukrasta taught me how to do it. Look, Tom, we can talk this through later when this is all over. Now I need to find Grimalkin and help her salvage what we can of this army.’

Starblade Book 2 Chapter 17