What grants Major Defile in ESO?

3 sets and 5 skill morphs grant Major Defile (4 area-of-effect, 1 single target). From skills it is available to: Dragonknight, Necromancer, Nightblade, Templar, Warden.

Does Major Defile stack in ESO?

No. Two sources of Major Defile do not stack — the second is wasted. One source is enough; cover it once and spend the rest of your build elsewhere.

All 8 sources of Major Defile in ESO

3 sets and 5 skill morphs grant Major Defile — each with the exact datamined line that grants it.

data retrieved 2026-08-23 · datamined via UESP

Sets that grant Major Defile (3)

Set	How (exact bonus)
Durok's Bane	When you take damage, you apply Major Defile to the enemy for 5 seconds, reducing their healing received and damage shield strength by 12%. This effect can occur once every 7 seconds per enemy.
Kynmarcher's Cruelty	(5 items) When you deal direct damage, you apply one of 5 random Major debuffs to enemies within 8 meters of you for 18 seconds. This effect can occur once every 8 seconds and only if an enemy is in range. Eligible effects are Major Breach, Major Cowardice, Major Defile, Major Maim, and Major Vulnerability.
Ward of Cyrodiil	When you deal Martial melee damage, you apply Major Defile to the enemy for 4 seconds, reducing their healing received and damage shield strength by 12%. This effect can occur once every 5 seconds.

Skills that grant Major Defile (5 morphs)

Listed per morph, because a morph is what you actually slot and morphs of the same skill do not all carry Major Defile.

Area of effect (4)

Can apply it to more than one enemy per cast — what a group needs.

Morph to slot	Skill line	How (exact datamined line)
Shifting Standardmorph	Dragonknight · Ardent Flame	Call down a battle standard, dealing 898 Flame Damage every 1 second for 25 seconds to enemies and applying Major Defile to them, reducing their healing received and damage shield strength by 12%.
Blighted Blastbonesmorph	Necromancer · Grave Lord	The skeleton runs after the target and explodes when it gets close to them, dealing 3600 Disease Damage to all enemies nearby and applying the Diseased status effect and Major Defile to them for 4 seconds, reducing their healing received and damage shield strength by 12%.
Dark Flaremorph	Templar · Dawn's Wrath	Afflicts the target and enemies within 8 meters with Major Defile, reducing their healing received and damage shield strength by 12% for 4 seconds.
Corrupting Pollenmorph	Warden · Green Balance	Enemies who enter the field are afflicted with Major Defile and Minor Cowardice, reducing their healing received and damage shield strength by 12% and their Weapon and Spell Damage by 215.

Single target (1)

One enemy per cast.

Morph to slot	Skill line	How (exact datamined line)
Soul Harvestmorph	Nightblade · Assassination	Also afflicts the enemy with Major Defile, reducing their healing received and damage shield strength by 12%.