The Guardian

The Guardian is a post-Moon Lord boss that can be fought after The Temple Keepers at night.

Spawn

 * The Guardian can be summmoned with the Ancient Rune anywhere at night.

Behavior
During Phase 1, The Guardian stays stationary while shooting projectiles at the player and restricts their movement area, similar to The Eye. After his health reaches 0, The Guardian flies up and displays his wings, beginning Phase 2. He will attempt to fly above the player while attacking. He gains more attacks as his health decreases.

Phase 1

 * Similar to The Eye, he creates a force field around itself, which sucks every player in that left the restricted area. While being away from the force field, the player can't use any hooks. They can use the Rod of Discord or any kind of mount to leave the arena, however that won't prevent them from being sucked in.
 * The Guardian shoots flaming bolts at the player.
 * The Guardian uses a tracker which attempts to line itself up with the player. Shortly after, a beam is shot at the position of the tracker.

Phase 2
The Guardian repeats the following attack pattern: Under 50% health: Under 20% health:
 * He flies in a horizontal line above the player releasing six stationary fire orbs, which shortly launches flaming bolts at the player.
 * He lines itself up with the player and rains down bouncing fire.
 * He shoots a spread of fire bombs, which are affected by gravity and explode after a short time while in contact with tiles.
 * He remains stationary, periodically shooting fireballs at the player.
 * Occasionally, The Guardian will summon a Temple Guard.
 * The Guardian modifies his attack pattern.
 * Instead of bouncing fire, he shoots fire beams downwards.
 * He fires more powerful flaming bolts at the player, which explode into multiple sparks on contact with a tile.
 * He remains stationary, shooting flaming bolts around himself.
 * He summons a horizontal 'wall' of inferno balls with gaps at certain intervals on one side of the player.
 * He create stationary fire portals, which disappear after lingering for a period of time.
 * The Guardian creates an aura around himself, which deals high damage to the player.
 * He summons flaming bolts which travel upwards.

Trivia

 * The Guardian's Phase 1 theme is called "Anthem of Flames", which has been composed by Ranipla and GENIH WAT.
 * The theme for Phase 2 is called "Reignited Inferno", also composed by Ranipla and GENIH WAT.
 * The Guardian's old sprite was a reference to the Kluex Avatar, a boss from Starbound.

Lore
Every flame has its beginning and so does every beginning its end. When the world was first shaped by the divine, one of the very first species known to mankind were the drakons. Once the creation had ceased, they had emerged from the vast depths of this planet, although, were they the first race to grow hostile. Obliteration was brought upon any that had dared to enter what belonged to them, their resources taken to empower their own kind. Thus one had chosen to ascend, becoming their leader and aid, known as The Guardian, an unrivaled beast that had become more than an idol to those that prayed. Sacrifices were brought to it, of little matter what it was - nothing was too sacred to be given to their omnipotent.

Alas, each race had their own battles to fight and so it happened, that they were confronted in a factional war with another race - the lihzahrds. A truly intelligent race indeed, they calculated any possible way of failure beforehand, before it happened. In answer of their failure, they unleashed an energized vessel that promptly absorbed the majority of the Guardian's power, effectively weakening the drakons. Through such pressure, the previous form of their leader had broken into two - a lengthy wyrm, empowered with its destructive nature, and a steady eye, imbued with its mind and voice. The creatures - dubbed as the Temple Keepers - and the remaining subjects, however, weren't able to track, or defy, the large golem nor it's soldiers.

They had retreated back into the depths in the hopes of reforming; with very little hope of their race rising back to power. The least they could do was to wait and pray, that many moons into the future, a powerful being may rise, so powerful that it could erase the golem and free the energy that was rightfully theirs.