You're a what?

The blue moon

Stiles

Everything was ready to go. Sundown was in 10 minutes. I was so nervous. Derek and Deaton put the handcuffs on me and attached the chains to them.
"It's going to be ok, Stilinski." Derek said, walking towards the door. Deaton nodded and followed him.
I heard bolts being put into the oak door and I sat down on the hard floor. I could see a white light shine down through the window and I knew it was time.

It was my hands first. They started turning invisible and back again repeatedly, like a computer screen glitching. Then my feet and my whole body. I remember hearing my self screaming and then falling into a deep sleep.

I was woken by the sound off scratching at the door. I stood up to try and open it, but I remembered that I had electric handcuffs on me, that then gave me a nasty shock.
The door crashed down to the floor to reveal a Nogitson. I crawled back but it seemed to glide towards me, as quick as a flash and grab my neck.
"You will die. You will kill your friends," it whispered, menacingly.
It's eyes turned emerald green to reveal... Scott? He looked up and me and smiled. He then put his hands in front of my face... 6 fingers?

I woke up, drenched in sweat, a wet cloth on my head and Deaton, Derek, Scott and Lydia sat nervously around me.
"You're ok!" Lydia squealed, pulling me into a tight squeeze.
  "What happened?" I asked looking at Dr. Deaton.
  "It usually happens," he replied, " you were pulled into a coma, with one of your closest friends telling you to kill the people closest to you. You handled it really well Stiles!"

A year later I was fighting enemies and being a supernatural.