What grants Major Debuff in ESO?

1 sets and 0 skills grant Major Debuff. No skill grants it — only sets do.

Does Major Debuff stack in ESO?

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

1 sets and 0 skills grant Major Debuff — each with the exact datamined bonus text.

data retrieved 2026-06-11 · datamined via UESP

Set	How (exact bonus)
Nocturnal's Ploy	(5 items) When you directly apply a Major Debuff to an enemy, remove a Major Buff with a duration from the target. When you directly apply a Minor Debuff, remove a Minor Buff from the target. These effects can both occur once every 15 seconds and a target can be affected once every 15 seconds. This does not apply to abilities with delays.