Minecraft Ghost

Ok guys. So in this video I know I sound like a screaming five year old but this stuff was kinda creepy. I was playing on my friends Minecraft server and he said he installed a new plugin called Ghost and that it would pick a target (me in this video) and try to scare or kill them. I would say it completed its goal on that. The entire time I thought it was my friend doing it but now I know it wasnt him. At the time I was also talking to him and his friend on Skype.