Phase Spider Matriarch

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The Phase Spider Matriarch is a type of Monstrosity creature in Baldur's Gate 3. It is a boss encounter in the Whispering Depths and possesses several powerful abilities.

History[edit | edit source]

The phase spider matriarch was once an arachnomancer named Eliette[text 1] and worshipper of Lolth. They wished to transform so as to "refashion myself in the Queen's image".[text 2]

Attacks and abilities[edit | edit source]

Generic Acid.webp

Venomous Bite Venomous Bite

D6 Poison.png 2d6 (2~12) Damage Types Poison damage
+
D8 Piercing.png 1d8 + 4 (5~12) Damage Types Piercing damage
+
D6 Poison.png 2d6 (2~12) Damage Types Poison damage (CON save to negate)
  • Bite a target to and possibly Poisoned Poison it.
Generic Poison.webp

Venomous Discharge Venomous Discharge

D6 Poison.png 4d6 + 4 (8~28) Damage Types Poison damage
  • Spit out a venomous substance and possibly Poisoned Poison those it hits.
Misty Step.webp

Ethereal Jaunt Ethereal Jaunt

  • Teleports the user to another location within 22m.
Generic Acid.webp

Matriarch's Call Matriarch's Call

Rage.webp

Spider Queen's Wrath Spider Queen's Wrath

Tactician Difficulty:

  • Creature is enraged! Gains an additional attack per turn. Strength is increased by 2 and has Resistance to physical damage.

Honour mode[edit | edit source]

In honour mode only, the matriarch and her Phase Spiders will all have See Invisibility.

Legendary Action Crowd Control.webp

Gossamer Tomb Gossamer Tomb

  • This creature is entombed in Infested Infested spider silk, and cannot move or take actions. Unless the silk is removed with Acid or Fire damage, it will explode, dealing 8d10Damage TypesPoison to the entombed creature.
  • From explosion:
    D10 Poison.png 8d10 (8~80) Damage Types Poison damage
  • Per turn from Infested:
    D4 Poison.png 1d4 (1~4) Damage Types Poison damage

Tactics[edit | edit source]

  • When combat begins, the Matriarch will attempt to hatch her nearby Phase Spiderling eggs. These eggs can be destroyed before the battle begins if the party can stay hidden (and allowing for an easy Pest Control achievement). Failing that, area damage spells work well on their low Hit Points. It is preferable to destroy all the eggs in Tactician/Honour mode due to her legendary action, but in lower difficulties it can be beneficial to leave a single egg behind in a batch as the Matriarch will essentially waste an action to summon a single Phase Spiderling.
  • The Phase Spider Matriarch will use its phase abilities to teleport around the arena.
  • At 50% or less Hit Points, the Matriarch will cast Spider Queen's Wrath on itself, entering into an enraged state.
  • Knocking the Phase Spider Matriarch into one the side holes labelled 'Chasm' will grant the party 250xp. However, knocking her into the centre hole (not labelled 'Chasm') will not grant experience, but its corpse can be found in the Underdark (X:140 Y:151) to loot and possibly animate. This does not work in Tactician/Honour mode.
  • When the Matriarch is on a web bridge, destroying the bridge using fire damage will inflict a significant amount of fall damage on her (~45, varying with height). The stone platforms they connect to have no loot on them and are mostly accessible even without the bridges, thus it is recommended to use this tactic whenever the opportunity presents itself.
  • Cast Protection from Poison or use Elixir of Poison Resistance on all party members before entering combat.
  • The matriarch never initiated combat. Combat log showed 90 exp reward for knocking her down the chasm.
    Lump the Enlightened and his ogres can prove valuable allies in the battle. They can be recruited just up above in the Blighted Village through a Charisma check or paying them 500g. This can result in a win-win situation where Lump is killed in the battle or is significantly weakened allowing the opportunity to easily obtain the Warped Headband of Intellect.
  • She has +1 bonuses to Strength and Dexterity on Tactician difficulty, with resultant bonuses to Initiative, Armour Class, Attack rolls, and Saving throws, making an already fairly fierce early game enemy even deadlier.
  • It's a good idea to spread party members out. Her venomous discharge ability has a large AoE radius.

Exploits[edit | edit source]

  • The middle spiderweb bridge has a stone outcrop that, when the matriarch stands on and the bridge destroyed, would effectively neutralize her: she will be stuck in her falling down animation but never move and, therefore, never enter combat. The combat log gives experience as if she has fallen into the Underdark, but the player can still kill her normally with ranged attacks afterward — yielding the kill experience reward and loot. This was found on a tactician playthrough and should work for honour mode.
    A good portion of the matriarch collision size(?) indicator is outside of the ledge.
    • Kill any minions. Having other starting combat for the queen will snap her back to normal.
      • Kill the eggs then the phase spider, use Minor illusion to draw them away and into kill-box. Use a rogue and equip her with Haste helm for hit-and-run. This should be easy, given all of them have -2 intellect saving throw.
        • Best setup location is the ledge gated by web: draw a spider into the low-ground directly below, activate combat mode first before attacking. Any location with similar advantage is also acceptable.
    • Lure the queen with Minor illusion to the outcrop. Attack the bridge then kill her with ranged, as going into melee will trigger normal combat.

Loot[edit | edit source]

Related literature[edit | edit source]

References[edit | edit source]

  1. Bloody Journal – Eliette
  2. Web-Covered Journal – Eliette

External links[edit | edit source]