The Keepers of Azera ( Book 1 of the Keepers Trilogy)

I am not human. I do not come from Earth.
My home is called Azera. I am an Azeran, or more specifically a Keeper, which is the name of someone that belongs to an elite army. Each person has a unique power given to them in a special necklace with a charm on it, and they spend the first twenty years of their life in an underground building called the Training Base, learning how to hone these powers with their Guardian, who raises and teaches them in the base. I am a Time Keeper, with a clock on my necklace, and I can control time.
Every ten years, five intelligent children are picked to be trained as a Keeper. One of my members had hypnosis as his power. And he used to create an unimaginable hell that killed many of those I loved.