Record of some weird stuff

First things first, I don't believe in Herobrine, Entity 303, or any of that stuff. I think it's all fake. But I'm a bit less skeptical now, even though I still don't believe in Herobrine or Entity 303. I'll tell you why. Earlier this month, one of my friends set up a 1.14 Minecraft server. He was pretty good at computer and code related stuff so he set it up himself. Nothing special really. Everything was pretty normal, we set up base in a village, protected against raids and other things you would do in Minecraft nowadays. The usual 1.14 experience. That didn't keep up for long though. I decided to go play on the server by myself to go progress through the game as usual. I was walking around the village, when I noticed what looked like a dispenser with it's hole facing up. I decided to go check on it. There was some dark red particle effects, like from potions of harming, and a nametag floating above, reading "Shrine". It was like it was one of those one-command mods or datapacks. I right clicked and a message popped up saying "Who to sacrifice?" in red and listed 1 user. Me. I opened the chat and hovered over my username. It was clickable, but I didn't click it. I initially suspected the founder, who we'll call J, since as I said, he could probably do something like this given time, especially considering he installed a few plugins in the server. I sent him a message on Discord. I've copied the messages exactly for your viewing pleasure. 9:14 AM  Very funny. [attached is a screenshot of the Shrine] 9:23 AM  that wasn't me, what are you talking about? 9:23 AM  yeah, sure. 9:23 AM  definitely not me, my humor isnt that cringy and it isnt april fools. look just get off the server, theres probably a hacker or something. 9:27 AM  you're pretty dedicated but ok. The thought of a hacker didn't cross my mind. After all, hacking clients usually don't have powers as wild as this (I would know since I play on anarchy servers occasionally), and although this server was public, it was only to a few people. But it could be somebody really good at hacking or something. After all, all of the anarchy servers I go to have some form of anti-cheat to make things more fun. I dismissed the thought of a hacker nontheless. I followed J's word but I set up one of my alts to record the server with OBS, and I had plans to sacrifice my alt with the Shrine. I forgot that this server auto-disconnects AFK players so my alt would've got disconnected after a while, but before then a player logged on, who we'll call Cat, encountered this Shrine and chose to sacrifice my alt. The footage that was recorded was alt in a room made of redstone blocks with an oak sign saying "ESHAVO" which seemed to be just nonsense. After a few seconds my alt got killed an a message saying "1 sacrifice" which, again, was colored red, appeared. The effects weren't evident at the time so I didn't think it did anything. I sent it to J and he thanked me. I can't show you the footage since it contains the username of this user Cat, and I'm too lazy to edit it out. (She would be pretty angry if I shared it in public.) That evening I had a Discord voice chat with J and I brought up the Shrine. "Well you're no stranger, considering you did set up the Shrine to mess with us." "Dude I didn't set that up, how many times do I have to tell you. I've been actively trying to find out who did it." I could hear in his voice that he was being truthful. "Are you being serious? Are you that dedicated?" He sent me an image of him interviewing Cat about it. He thought it was her considering she sacrificed my alt to ESHAVO or whatever. (Same feelings about her Discord tag so I can't share and again, too lazy (don't have my computer as I'm typing this anyways.)) "Look I wouldn't go that far for any joke alright?" The conversation veered off to other territory but this wouldn't be the end of our discussions about this Shrine.