Ivanna strode forward to do battle with the Arch Mind-flayer attacking with her great-axe, she wounded it several times and purplish ichor bleed from its wounds. In response it grapple her with its tendrils and she became stunned in her grasp. Malus continued to pour lightning at the outsider and ate some Hellish Rebukes for his troubles.
Stunned the Mind-flayer began to bore a hole inside of Ivanna's skull doing massive damage but luckily not enough to finish her off.
The rest of the team (Including Brindlebuckle) dealt with the Bulletes and Zombie's and began to back up Ivanna, Malus and co Maisey was polymorphed into a T-rex and against such odds the Ulitharid was overwhelmed.
The Island city was still covered in Undead but whatever controlling force was in charge of them was holding them at bay.
The team decided to take a rest… Jack cast a Fabricate to magically construct a building with good cover and concealment for them and then cast Leomund's Tiny Hut to give the crew a safe spot for a rest.
After the long rest was completed unbeknownst to the party an ancient and malevolent entity emerged from its lair in the Pyramid. Already aware of the intruders to its isle it observed for a time before deciding to attack the team while they were all clumped together in the the magic hut.
Enter Blahino the Beholder. It used its anti magic ray to dispel the hut and caused the rooftops of the building to collapse dealing damage to everyone it then used its petrification ray on Shey-lar turning her to stone! and used telekinesis ray on Jack dragging him outside.
Thinking quickly Gilius attempted a banishment on the Eye Tyrant and it succeeded! This allowed the group to spread out and use guerrilla tactics as well as get there strategy together for a moment. Jack casted flight on Ivanna and Larry and they proceeded to follow the right hand side of buildings to attack. Maisey provided support with bardic inspiration and crossbow and took great pains to remain in cover. Astrea stepped in/out from cover, firing multiple volleys of deadly arrows as she went (and was almost destroyed by a Disintigration ray for her trouble, some timely use of battle-master parry reduced the damage) Malus attacked with lightning and Gil took cover and healed where he could.
Blahino reached out with a Telekinesis ray and attacked Jack who had some mirror image buddies with him, dispelling the mirror image with his anti magic field and then hit jack with a death ray causing the mage to loose concentration.
Ivanna dropped to the ground and Larry used his great speed and agility to parkour up the side of a building and leap off and grab onto Blahino! The Beholder targeted Larry with everything he had for a turn and Larry deftly avoided all of it.
Astrea took several more shots and retreated back to safty, Maisey moved through the ruined buildings and have Astrea some much needed healing. Jack recast his mirror image and Malus continued to throw lightning. Gil tried to cast Lesser Restoration on the Petrified Shey-lar and it did not work (the DM used his Epic Dad Voice on the player controlling Gil at this time because the player was being a social-retard)
Ivanna lobbed some Javelins, Larry started to do some really good damage doing sky-surfing kung-fu on the floating meat-ball. Blahino cast charm rays on Larry only for them to fail. Larry was blasted off by eye ray and then killed with a death-ray and his lifeless form fell to the ground.
Steeling herself Astrea emerged from cover stalking the Eye-Tyrant she used her attack and then action surged to fill the Aberration with Arrow's like a pin cushion. Panicking, Blahino started to move towards its lair and was shot down and finished off by Astrea cutting of eye stalks with her Chain-whips piles of meat flying in all directions.
Blahino was dead, its overconfidence got the better of the entity in the end.
Gil cast Revivify on Larry. Happy days