Universal Entity "Aegis"

Universal Entity "Aegis" is an extremely powerful late War-Mode boss and NPC only appearing after the Moon Lord has been defeated and the Dimensional Collision event has been completed. In order for him to move in, you need to make a house out of war-mode ore blocks or bricks made out of hardmode ores, and the house must contain the "Grand Dream" painting. The NPC's only name is "Aegis". When talked to, you can choose either to buy his goods or 'Spar. 'Whenever you choose to spar, you will immediately be transported to the Arena, a biome that can only be created by choosing to spar. Universal Entity "Aegis" will then become hostile. However, if you recieve a blow that would kill you, you will not lose any items and will be transported back to where you challenged Aegis. However, he drops an EXTREMELY powerful weapon when he is defeated.

Stats:
 * 1000000 HP
 * 350 Defense

Phases:

PHASE 1: For the first 30 seconds, Aegis will create a shield that pushes back the player from him. The shield will constantly expand, and becomes a massive danger to the player because of the medium size of the Arena. If the player falls into the void, then the sparring instantly ends. After the phase ends, a message will say in the chat "Now we Fight!"

PHASE 2: Aegis will constantly rush at the player, attacking them with a multitude of weapons. Among these weapons are the Terrarian Revenge, Charybdis, True Terra Blade, and the Lunar Scythe. This phase will last until Aegis hits 500000 HP.

PHASE 3: Aegis will start assulting the player with the same weapons used before, but with a much faster speed and 50% more damage. However, his defense is reduced to -1000 during this phase. It lasts until he hits 250000 HP.

PHASE 4: Aegis will use the Lich Knives attempting to heal himself. He will continue to attack until he dies.

DROPS:

TBA