Sentient Pest (Gnoster) Boss Guide - Weaknesses & How to Beat

Sentient Pest (Gnoster, Wisdom of Night) is a Nightlord boss in Elden Ring Nightreign. Learn its weaknesses, how to unlock it, and strategies to defeat it effectively.

Sentient Pest Weakness

Sentient Pest Weaknesses

Fire

Is Sentient Pest Strong?

How to Prepare for Sentient Pest (Gnoster) and What to Do Before Day 3

Prepare Fire Affinity Weapons

Nightreign's Sentient Pest is weak to Fire Affinity. Prepare Fire Affinity weapons to increase your damage efficiency.

Fire Affinity Weapons Drop More at Fire Ruins

At the bottom right of the base icons on the map, the Affinity is displayed. At bases where the Fire icon is displayed, Fire Affinity weapons are easier to obtain, so be sure to clear them by the final day.

Prepare Warming Stone and Neutralizing Boluses

In the area just before the boss, you can purchase various items with Runes. The more healing options you have, the easier it is to clear, so purchase Warming Stones whenever possible. Also, Sentient Pest attacks by spreading Poison Mist, so if you find Neutralizing Boluses, prioritize keeping them.

Increase Number of Sacred Flasks at Church

To increase the number of times you can heal, make sure to increase the number of Sacred Flasks. Sacred Flasks can be increased at a Church, and you can check their locations on the map.

Sentient Pest (Gnoster) Boss Strategy and Attack Patterns

Split Up to Handle Scorpion and Moth

At the start of the Sentient Pest fight, you will face both the Scorpion and the Moth. Since the Moth flies and is difficult to hit with melee attacks, players with ranged weapons should focus on the Moth, while those with melee weapons should handle the Scorpion. This is an effective approach.

It Opens Fire After Ascending and Scattering

When the moth gains altitude and scatters scales, it will shoot light bullets that rain down over a wide area. These deal significant damage if they hit, but the attack buildup animation is clear, so create a large distance from the moth and prioritize dodging.

Prioritize Dodging When During Rush Attack

When Sentient Pest's HP drops to around 50%, the moth and scorpion will merge. After a roar that deals wide-area damage, it will launch a rush attack at the targeted player, so the player with the red Murk should focus on dodging. Other players should also be careful not to get caught in the charge.

Dodge Ground Attacks by Running Around

The scorpion may attack from underground. The timing of its emergence is hard to predict, so running around to dodge is the safest option.

Watch for Light Pillars When the Moth Glows

After the moth’s head begins to glow, be careful as light will rain down from the sky. The ground will also glow just before the light strikes , which you can use as a cue to dodge.

Other Bosses Found in the Same Map as Sentient Pest

1. Smelter Demon

   Day 1 Boss

   

   Weak

   -

   ---

   Spawn

   Appears on Night 2 when targeting "Sentient Pest"
2. Ulcerated Tree Spirit

   Day 1 Boss

   

   Weak

   Standard

   Slash

   Strike

   Pierce

   Fire

   ---

   Spawn

   Appears at various locations in the field when targeting "Tricephalos"
3. Nox Dragonkin Soldier

   Day 2 Boss

   

   Weak

   Slash

   ---

   Spawn

   Appears on Day 2 when targeting "Sentient Pest"

Elden Ring Nightreign Related Guides

Nightlord Strategy Guides

Nightlord Bosses
Tricephalos		Gaping Jaw		Sentient Pest
Augur		Equilibrious Beast		Darkdrift Knight
Fissure in the Fog			Final Boss

Night Bosses

Tricephalos Day 1 Boss		Tricephalos Day 2 Boss
2 Demi-Human	Bell Bearing Hunter	Tree Sentinel	Fall Omen
Gaping Jaw Day 1 Boss		Gaping Jaw Day 2 Boss
The Duke's Dear Freja		Ancient Dragon
Fissure in the Fog Day 1 Boss		Fissure in the Fog Day 2 Boss
Ulcerated Tree Spirit		Dancer of the Boreal Valley
Sentient Pest Day 1 Boss		Sentient Pest Day 2 Boss
Smelter Demon		Nox Dragonkin Soldier
Augur Day 1 Boss		Augur Day 2 Boss
Wormface		Godskin Bosses
Equilibrious Beast Day 2 Boss
Golden Hippopotamus

Powerful Enemies

Powerful Enemies
Flame Chariots	Night Idol Boss