Beiro, Elf Wizard

This is my new idea for a D&D character:

In his last life he cast a spell on himself to be reborn. Very little was know of this spell when he cast it. After dieing in battle, his soul was put into a young child's body with the closest magical aura to his own. When he learned to control his new body he realized that he could not remember any of his spells short of the most basic, and now all his knowledge slowly trickles back. A side effect of this new kid body, and brain, is that he has a new obsession with toys. All of his spells are now cast with the help of "toys" that he manifests with Prestidigitation. His favorite "toy" is his dragon cannon which can talk/move on his own, it also casts magic missile as well as some other spells. He is now on a mission to once again become the wizard he once was.