Anguis

Notes:
Estimated at around 90k HP. Will occasionally go into a 'Chainspell-Comet' mode. Comet is weak as hell, did like 200 damage to a SAM with a half decent MDT set. Meteor is also really weak and not worth concerning yourself with.

Uses Dark Star a lot more than normal Yilbegan does.

Tank it on whichever side I guess up to you. We tanked it on the front, Soul Douse takes an eternity to 'charge' and is easily avoided by side-stepping, but Chaos Blast resulted in a few deaths due to the Max HP down thing. I'd say whichever TP moves you find the least annoying, at least with this you don't have the danger of wing > depop that you had with regular yilb.

Best to drag it down from it's pop spot to the previous 'floor', there's a nice ledge where all the mages can stand to stay out of AoE.

Unique TP moves: Chilling Roar - AoE Terror, hate reset (not 100%, but significant). Didnt use this til ~30%. When he uses this it will pop an add. Adds don't melee, move, or cast, but they have a silence/amnesia/poison aura and they have an annoying habit of popping right on top of the mages. Have about 1k HP and are really weak to magic damage (Holy with full Afflatus Solace charge 1-shotted it for 1150 damage).

Abyssic Blast - AoE damage ~2.3k. Again only used below ~30%. Recommeded BRD Scherzo the tanks for last 30% to give them a fighting chance of surviving this. Also bring spare DDs and consider just having 1 tank once under 30%.

Final treasure pool seems to always contain 2-3 pouches of coins.