The author is @helloperson11
Covers:

Summary:
There are these four teenagers that try to live a normal life. However, due to their backgrounds, it's pretty much impossible. Each one's backgrounds ties to their weakness. Each one has control over an element of this world: fire, air, water, or earth, and a band of people are trying to defeat them so they can control all four aspects. The four must venture into the lost city of Delem Heights, which is said to be haunted in the sense that a destructive wolf, who burned it to ashes, still lives there. When someone sees the shadow of this wolf, they die 24 hours later. It's up to the four teenagers to defeat this man and solve the mystery of the wolf.

Personal Opinion:
My favorite one is the first one. I love the whole blending style. And I love this book. When the author approached me to make a cover, I nearly had a emotional attack. I'm so excited to see the new chapters, and to see how the author's career is going to develop.