Antiunknown

one day in minecraft Java when I just switch to java I’ve been seeing shadows and flash’s of textures going opisit for a second and when I try sleeping at night or a thunderstorm It says you can only sleep during day or when wether is clear creeper have been like enderman and when I choose the Steve skin  beca I don’t have custom skins yet I makes me where the Alex skin.one day i saw someone in a mineshaft  there was a upside down name tag since every thing was opisit I turned his name right side up. It said antiunkown I typed it in chat and it auto killed me saying DO NOT SAY THAT NAME!!!! So i became a god with the commands /effect @s strength 10000000 30 so I can one shot him but he came charging at me with 2 glitch distorted axes and kill me saying YOU WILL NEVER WIN!!!!! So I went into the game code and there was a new item it’s called antiunkown so i was about to pull out a normal block bec when antimatter and matter touch I goes kaboom but then he left the code and everything was back to normal so that’s good but he may be spreading to other devices so be careful.