Nebula Pillar

The Nebula Pillar is one of the four Celestial Towers. It appears during the Lunar Events. It can be found in the purple hued area during the Lunar Events. It drops around 30-40 Nebula Fragments on average. During the battle the pillar will start with a large force field around it. this can be taken down by slaying an unknown number of minions. once the field is down minions will continue to spawn, and the boss becomes attack-able. the boss itself is fairly easy having only 20000 HP and weak and easily dodge-able attacks. While the boss may not be a threat, the minions will still attack you and should be taken care of with a homing weapon from time-to-time. While fighting the boss all blocks and items will turn a shade of Purple similar to how the other pillars turn the environment green red and blue respectively.

Summons

Tips
A quick effective way to kill all of the pillars is to use the North Pole directly and vertically above a pillar. Even if a player is not a melee build, if all of the snowflakes can make contact, the pillar should fall in less than 20 seconds. Another way to easily take down the pillar if you have already defeated the Vortex Pillar is to use the Phantasm with Chlorophyte Arrows.

Trivia
-This pillar seems to be made out of ebonstone, similarly to the Stardust Pillar.

-The Nebula Pillar seems to have some sort of crystals growing out of it.

-Unlike the other pillars, the nebula pillar doesn't seem to have any special background effect other then the large purple planet.