Shadow creature

Before we start...
Part of this creepypasta is true. On popular cracked minecraft servers some players reported that here is some flying creature in caves that can go through walls. Looking of this is been simple, gray-transparent colored humanoid being. No-one knew what was caused that, some players thought that its some troller or hacker because cracked servers have more hackers than premium ones. This problem is barely started disappearing. Today no one cant find this.

First Phase
While I was exploring the world in my first days on server, I found some hole. Hole that wasnt been so big. Its been entrance to cave. At first it looked like small cave, but after I found narrow way that looked like someone mined it, Im been surprised. Its been cave with so much ways that are endless. Ive gone to one of them and saw lots of ores such as iron, gold, diamonds etc. Im been happy and I thought that its just been a luck, but after I started mining ores something weird happened... Ghost, shadow monster or whatever is it been is started flying through walls and at the same time flying around me. Im been like: WTF?! But I just started ignoring it and saying: "Okay mr hacker, its stupid joke". But no-one responded. While I was about to finish mining all ores, I saw more entrances that were going to give you more ways that have again lots of ores. Its been so boring, so I realized that I have so much ores in my inventory and normally started going to home. But if Ive passed so much entrances and ways how am I able to back to my home? When I wanted to back some entrances are been closed with no reason. And by the way for a long time I didnt saw flying shadow.

Second Phase
Ive simply gonna breaking walls at the end of entrance and behind them theres been something very interesting. Secret basement! Its been builded out of most wooden walls with barely used stone. Floor is been almost whole been made of stone. It had lots of chests full of papers. All of them are been regular until I found stairs. Its been upper room with only one but big chest. Im opened it and theres been book. This is been in book: "Im not sure that you will ever back to your home but theres one advice, find me. :)" Im started getting so uncomfortable because I realized that shadow isnt been some alive being. I saw a door in upper room and opened it. After that message popped up into chat section colored in red: "You are cursed". Then I writed: "Nah Im normal, I can move, I can do everything". And then silence...

Third Phase
After minute of silence Im been, without reason, teleported to one room with, simply no exit. Then I understood what was meant by "You are cursed". So while I was exploring boring room with stone walls, floor and roof shadow popped out from wall in front of me. Im been so angry, sad, scared and all of these feelings made me to finally fight with this cursed shadow creature. I selected my diamond sword and started hitting it, but it all didnt helped. Shadow doesnt get any damage or even knockback. I was been able to go through it. After half of minute not moving, this creature started teleporting and glitching everywhere in room. Its been weird. Then disappeared, and I was teleported to my home. Then, everything was been normal and I never saw the shadow...