Aidan will be able to create anything he desires, however it will be unseen by anyone else except for him. This is because the objects or being is still physically there however its existence is dependent on Aidan, and as such the created item is 'in his head'. This means that he can only create the item and cannot make it visible to others. The things that have been created will act just like the real thing but will just be invisible, intangible and inaudible to all others. Aidan can create anything physical being or object that he can think of, but the bigger the object or being is, the harder it is to create.