Alright, this event involves series of events to summon it. After you defeat Skeletron a message will pop-up saying, " An evil force has risen." But the character will not have to worry. Until he goes to the biomes. When you go to the biomes it will be more hostile as usual and if you want to get your desired item or material that you need in the biome you will have to have very good armor to survive. After a certain amount of mobs are killed, a boss will summon of it`s biome type and try to destroy you. It will drop decent loot that will help you on your journey. After 5 biome bosses are killed, you will get a message saying," You must stop disrupting the forces of Terraria. Or you will regret it dearly......." Then he will take away 50 hp away from you and the mobs in the biome you are in will now be buffed for 20 minutes. Next, the last biome boss you kill, you will get a message, " Fool! There is no order in Terraria now!" After that mobs from every biome come to kill all you and your npc. You will fight 300 mobs. After you defeat the wall of flesh, the mysterious force will say," If even the Underworld ruler cant stop you, then I WILL. I will be seeing you soon ( Terrarian`s name.)" Then you will not be hearing from him until you defeat the Moon Lord. He will say, " I have summoned more intergaltic beings in your precious world, everything in your world will be dead. Goodbye (Terrarian`s Name)! 1 machine that signals a beam in each biome will spawn and you have to destroy them. But, they are guarded by a forceshield that takes 6000 dmg to destroy. But you will hardly get a shot as the monsters in the biome will be swarming at you protecting the machine. Once you destroy all the machines, he will say if Terraria`s forces cant kill you then other intergalatic worlds can!" Then you will be teleported to another world. You will have to fight through 3 or maybe 5 worlds to get teleported back to Terraria. But, when you are teleported back to your home you see a dark figure on the map coming for your home. You have 10 minutes to prepare for the mysterious force that is coming from your home. The sky will darken. Thunder will strike. All nearby mobs will run in the oppisite direction the force is coming to. Then..... The boss is (Insert name) and he will say," You were a good oponent. But this all ends NOW!" He will come at you. His hp 350k health. Defense 150. Then. At half health, he will start shape shifting and turning into the bosses you fought. Last, when you defeat him he will resort to his final move wither bomb. he will release a bomb that in a 70 tile radious ANYTHING will insta die. You have thirty seconds to get running. Atlast after his bomb has been released armor will drop down. But you are not to touch this armor AT ALL. Unless you happen to have souls of light in your inv. The armor will give you all the debuffs in Terraria. The armor will be the best armor in the game but you will have to purrify it with 50 souls of light each piece. And then the madness is over. Also, you get a sword that you have to purrify with 70 souls of light to get the Angel Sword. Dmg, 450. K like it?