Diablo 4 (D4)

How to Get Mucus-Slick Egg

Diablo 4 (D4) Walkthrough Team

Last updated on: October 21, 2023 02:15 AM

Mucus-Slick Egg is one of the components needed to summon Duriel in Diablo 4 (D4). Read on to learn more about Mucus-Slick Egg, how to get it, how to use it, and its overview.

List of Contents

How to Get
How to Use
Overview
Related Guides

How to Get Mucus-Slick Egg

Defeat Echo of Varshan in World Tier 4

D4 - Defeating Varshan
The Mucus-Slick Egg can be obtained by defeating Echo of Varshan in World Tier 4. Note that you can fight Varshan starting in World Tier 3, but the Mucus-Slick Egg will only drop in World Tier 4.

The Mucus-Slick Egg is a guaranteed drop upon defeating Varshan, but do note that only the player who summons Varshan will receive a Mucus-Slick Egg as a reward.

Summoning Echo of Varshan

You can summon Varshan by acquiring Gurgling Heads, Blackened Femurs, Trembling Hands, and Malignant Hearts. You need to offer 1 of each material inside the Malignant Burrow to summon Varshan.

To get these materials you need to complete Tree of Whisper objectives or kill Grotesque Debtors that appear in different events, such as the Legion event, World Boss, and Blood Harvest.

If you're missing a specific body part needed to summon Varshan, you can visit the Alchemist and transmute them into a cache to receive another body part.

▶︎Legion Event Timer and Locations
▶︎World Boss Timer, Time Schedule and Locations

How to Use Mucus-Slick Egg

Offer in the Pestilent Altar

The Mucus-Slick Egg can be offered in the Pestilent Altar located inside the Gaping Crevasse dungeon. You would need a total of 2 Mucus-Slick Egg together with 2 Shard of Agony, to summon and fight Duriel.

Gaping Crevasse Location

The Interactive Map both shows the location of key points on the map, and doubles as a collectible checker.

Click an icon on the right side to show all the pins of a specific type, or click the magnifying glass button to search for a specific pin by name.
Click a pin on the map to see its name and description, and a relevant picture or video if available.
From here, click Mark as Acquired to indicate that you've gotten a collectible already. This will change its icon on the map to show that it has been collected, and add 1 to that pin type's Counter.
To undo this, click on the same pin and click Restore to unclaimed.
To check how many pins you have marked so far, check the Counter in the bottom left, and click the icon that looks like a checklist to see counters for all pin types.
If the collected pins start to get in the way, you can hide them all by clicking the green Show Pins button on the left side.

Icon	How to Use
	Show Names This button reveals the Name of every icon currently shown.
	Show Pins This button will toggle between showing and hiding all the pins which you have already marked as acquired.
	Fullscreen This button will change the map display to fill the screen.
	Search Mode Toggle This button will display a searchbar which you can use to search for an individual pin by its name.
	Icon Mode Toggle In Search Mode, this button will toggle you back to Icon Mode, removing the search bar and displaying the icons again.
	All Pins This button is shown along with the Icons on the right when there are over 6 types of pins. Click it for a full selection of all available pin types.
	Counter Tracks the number of pins you have of a certain type. The pin type shown is set to the page and currently cannot be changed; however, all pin type counters can be viewed by clicking the checklist icon on the right side.
	View All Counters This icon is found on the right side of the Counter. When a map has more than one pin type, click this icon to see Counters for all pin types.
	Zoom In / Zoom Out This icon is found on the top left side of the map. You can press these buttons, or use your scroll wheel while hovering, to Zoom In and Out of the interactive map.

Note that the Gaping Crevasse will only appear on the map in World Tier 4.

Mucus-Slick Egg Overview

Mucus-Slick Egg Overview
	Type	Consumable - Magic Summoning
	Sell Value	50,000 Gold
Description	Merged in Gaping Crevasse in southern Kehjistan with Shard of Agony to summon a powerful enemy. Requires 2. Acquired from Malignant Burrow in World Tier 4: Torment only by the one who performs the summoning.

Diablo 4 Related Guides

Diablo 4 - Bosses

List of All Bosses

All Bosses By Type

Main Quest Bosses		Stronghold Bosses
Dungeon Bosses		Uber Bosses

All Uber Bosses and Required Materials

Uber Boss	Required Materials
Lord Zir, The Dark Master	・Exquisite Blood
Echo of Varshan	Malignant Body Parts: ・Gurgling Head ・Blackened Femur ・Trembling Hand ・Malignant Heart (WT4 only)
Grigoire, The Galvanic Saint	・Living Steel
Duriel, King of Maggots	・Mucus-Slick Egg ・Shard of Agony
The Beast in the Ice	・Distilled Fear
Uber Lilith	None

All Bosses Per Region

Fractured Peaks		Scosglen		Dry Steppes
Kehjistan			Hawezar

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