Client-Side Phantoms

What if Phantoms were client-side?

Imagine a server, all the players but you have been sleeping, and as night comes you hear a terrifying screech coming from above. You turn around to see a green-eyed predator swooping down on you and attacks. You race to your friends for help but all they see is you, punching the air and getting knocked back, unable to do anything for you as you hallucinate your own demise...