The Voidspire

Vorasius Mythic Boss Guide

Vorasius
Purke
Last Updated: 10th May, 2026

Raid Setup

Introduction

Welcome to our Mythic Vorasius Boss Guide, for The Voidspire Raid. Learn about the Mythic specific fight mechanics and the strategy we recommend to defeat this boss on Mythic difficulty!

This guide focuses on a Mythic strategy, and won’t explain the basics of the fight, so make sure you read through the Heroic version of the guide for this boss if you are unfamiliar with the encounter.

Fight Style: Single Target fight with occasional adds

Recommended Setup: 2x Tank / 4x Healer / 14x DPS

Recommended utilities: None

Hero/Lust usage: Pull

Addons: Northern Sky Raid Tools

Easy Mode

Mythic Changes:

  • Dark Goo puddles are permanent and expand, so puddle placement matters a lot.
  • Walls need 3 Blistercreep deaths each, not 2.

Playstyle:

  • Have the whole raid play in melee.
  • After each Shadowclaw Slam, step into the impact spot immediately to make Aftershock basically irrelevant.

Add Phase Rules:

  • Kill Blistercreeps on the markers starting from the far back first, because Goo expands.
  • Split raid so both sides have equal grips and knockbacks to place adds cleanly.
  • You can still grip/knock adds right before they explode to line up the wall clip.

Biggest Priority:

  • Do the first add phase cleanly. One bad Goo puddle near the middle makes the rest of the fight way harder.

Healing:

  • Blistercreep deaths hurt a lot on Mythic. Plan healer cooldowns and use personals during add phases.

Mechanics

Dark Goo Mechanic Icon

Dark Goo

Whenever a Blistercreep dies, it leaves a permanent puddle on the ground called Dark Goo.

The puddle deals heavy damage to anyone standing in it and expands over time. This forces you to be intentional about where you kill the adds, because bad placement will make the room unplayable later.

Void Crystal Mechanic Icon

Void Crystal

On Mythic, the walls require three Blistercreep deaths on top of them to shatter, instead of two on Heroic.

Strategy

Just like the previous boss, there aren’t many extra mechanics on Mythic, but the one change that exists completely changes how you handle the add phases. The fight isn’t harder because the boss suddenly does new things, it’s harder because the room becomes unplayable if you place puddles badly, even once.

The two Mythic rules you build the whole plan around are:

  • Dark Goo puddles are permanent and expand over time
  • Walls need 3 Blistercreeps per wall instead of two

So every add wave is now more about planning and placement than raw damage.

General Positioning

Have your entire raid play in melee range for most of the fight. This lets you basically ignore the Aftershock rings as a mechanic.

The simple pattern is:

  • Tank soaks Shadowclaw Slam
  • The moment it lands, everyone steps into the impact spot
  • The rings come out from that spot, so the middle becomes safe instantly

If you try to “spread and dodge like normal,” you’re just creating extra chaos for no gain.

Marker Setup and Wall Plan

Place markers like shown below.

vorasius mythic markers setup

You want to kill Blistercreeps on top of those markers, and you want to start from the far back marker first. The reason is simple. Dark Goo expands, so any puddle dropped closer to the middle early will haunt you for the rest of the fight.

Your wall plan by add phase looks like this:

  • Add phase 1: kill on Red and Blue
  • Add phase 2: kill on Green and Yellow
  • Add phase 3: ideally you never see it, but if you do, kill adds in melee and survive

The goal is to break both walls each add phase and keep every Goo puddle as far away as possible.

Add Phase Execution

When Parasitic Expulsion happens, dodge the spawn swirlies and start controlling fixates.

Because walls require three Blistercreep deaths each now, you need clean handling and good distribution of utility.

Split the raid so both sides have roughly equal tools:

  • grips
  • knockbacks
  • stuns
  • anything that helps you drag the fixates exactly where you want them

You don’t have to rush to kill the moment an add reaches the marker. Blistercreeps have a short delay before their death explosion, and during that time you can still grip or knock them slightly to line up the explosion so it clips the wall perfectly.

If your raid is a little messy here, this is the difference between a clean fight and a room that slowly turns into a swamp.

Why the First Add Phase Matters

Add phase 1 is the most important part of the entire fight.

If even one Blistercreep dies too close to the middle, that Goo puddle will expand and steal space for the rest of the encounter. It doesn’t instantly wipe you, but it turns every later laser dodge and reposition into a much tighter problem.

So treat the first add phase like it matters, because it does.

Second Add Phase and Kill Timing

If you did add phase 1 cleanly, add phase 2 becomes much more forgiving. You still need to break the walls, but you’ll have more space and less panic.

With current gear, you should usually be able to kill the boss before you ever have to do a third add phase.

If you do reach a third add phase, it’s awkward because it doesn’t really buy you much time. The enrage is close after the third laser finishes, so the fight becomes a question of “do we fully commit to adds or just push the boss”?

A simple rule that usually works:

  • If the boss is low enough, ignore adds and focus boss, kite as needed
  • If the boss is not low, you still have to manage the adds, but don’t expect it to be a comfortable long phase

Healing notes

Healers need to pay attention to the add deaths. On Mythic, the Blistercreep death explosions plus the general raid damage can stack up quickly, especially when multiple adds die close together.

Have personals ready, and plan at least one heavier healing cooldown for each add phase, because people will get clipped, and pretending they won’t is how you lose pulls.

If you place Goo cleanly, break both walls each phase, and keep the raid playing as one group in melee then this boss won’t put up much of a fight.