Chance

Devin is a warlock, the most powerful one yet. But he's a teenager and full power comes only to adults. As random creatures begin attacking humans, and most importantly, his friends Devin must figure out how to save everyone and not get hurt in the process. All while navigating love with one thought of as evil spawn.

The Society of Imaginary Friends (Book 1 of The Conjurors Series)

Belief is a powerful magic. Valerie Diaz has a power that she can't contain, and it's killing her. Bounced between foster homes and the streets, she only has time to concentrate on staying alive. But a visit from the imaginary friend of her childhood opens a world of possibilities, including a new life half a universe...