Description:

Adds Xylos the Star-Sleeper, a floating celestial boss with a soft glowing cyan body, constellation markings, galaxy-like eyes and a magical starfield face that hovers and fights players and hostile mobs, teleporting unpredictably, manipulating gravity to pull or push foes, calling down lightning that can inflict Wither, and resisting fire. Xylos summons persistent phantoms that do not burn in daylight to aid it in battle, but it can only maintain up to three active phantoms at a time. If defeated it spawns an enraged Xylos Revenge that aggressively teleports to and focuses on players, slows enemies on hit, plunges the sky into a dark storm until vanquished, ignores damage from other mobs, punishes attackers with lightning, and can drop rare loot including a special music disc.