Practically Witches by Harper A. Brooks

I’m RJ—Robbie Joe, thanks to my mom’s creativity—and I’m a witch.

Well, kind of. I’m still in training.
Magic is like second nature to my sister, Aimee. She’s the golden child, excelling at every spell, acing every test, and just generally being perfect. Me? My magic’s about as predictable as a coin toss.
I never really cared much about it… until now.
Suddenly, our coven is under attack. Witches are losing their powers to an evil we believed to be just legend. Even Aimee falls victim, her magic drained. With so few of us left, it’s up to me and my lackluster powers to save our coven from total extinction.
No pressure, right?
As Aimee and I search for a way to restore the coven’s magic, shocking truths about my past and my true potential come to light. Maybe I’m not a mediocre witch after all. Maybe I’m something special, but the power within me is proving to be dangerous, reckless, and uncontrollable…just like me.

I need to get ahold of my newfound abilities to stop the looming threat to our kind. If I don’t, I won’t only lose everyone I care about, but I’ll lose myself as well.