Decay Support

Decay Support is a support gem that grants a chaos damage over time to the supported skill.

Skill functions and interactions
Being a chaos damage over time gem, Decay's damage is affected by any passives or items that increase Chaos damage or increase Damage Over Time. Skill Effect Duration will not affect the duration of Decay unless it is linked to a skill with the duration tag.

Because Decay deals damage, it can benefit from other support gems it is linked with. Decay is not strictly a skill, but can inherit some skill gem tags of the supported skill, namely those that change the source of damage to something other than the player (such as totems and minions). Support gems that have the wording will affect Decay's damage, provided the skill gem is eligible to be supported. For example, cannot affect Decay unless it is linked with a skill that has the duration tag, since Decay does not natively have the duration tag. Likewise, Decay's damage will be increased if linked with a minion skill and, as well as passives and items.

The supported skill can be given the duration gem tag using (for spells only) or Lifetap Support (all skills, TBC in 3.14). For example, does not have the duration gem tag natively but gains it on being linked to one of the aforementioned supports.

Certain damage modifiers from Skills will influence Decay's damage. Damage effectiveness does not apply, but "% more damage" or "% of damage per stage" modifiers do, such as Charged Dash, Storm Burst, and Arc allow Decay to deal increased damage. Similar modifiers that are restricted to "Spell Damage" or "Hits and Ailments" do not apply, however.

Suggested Support Gems

 * (Quality only)
 * (Quality only)
 * (Quality only)
 * (Quality only, as Decay is not an ailment)
 * (Only the damage over time increase, as Decay is not a spell; this will also increase the duration, regardless of the skill's tags)
 * (With energy shield)
 * (Hex gem required and only the '60% more damage per 5 Doom' portion effects Decay, which results in 480% more damage at 40 Doom)
 * (If the linked skill has a duration tag)
 * Lifetap Support (TBC in 3.14)
 * (This will also reduce the duration, regardless of the skill's tags)
 * (If the linked skill has a duration tag)
 * Lifetap Support (TBC in 3.14)
 * (This will also reduce the duration, regardless of the skill's tags)

Known Tags That Can Be Inherited

 * Brand
 * Channelling
 * Duration
 * Mine
 * Minion
 * Totem
 * Trap

Version history

 * Now deals 120 Chaos Damage per second at gem level 1 (from 96), up to 843 Chaos Damage per second at gem level 20 (from 675).


 * Decay Support has been added to the game.
 * }