Arcane Enhancement

Arcane Enhancements are special items that are rewarded for completing a Trial mission. These enhancements can be applied to any Warframe Helmet or Syandana, and provide buffs that can be activated by achieving certain conditions within a mission.

Application
Arcane Enhancements are applied to an item by using the Arcane button at the bottom of the foundry. Arcanes can be applied to either a Helmet or Syandana. After an Arcane has reached Rank 1, meaning there is at least one Arcane Enhancement applied, it will move to the "Installed" tab where further Arcanes can be applied to the item. If you posses any Arcane Distillers you can also remove them from a given item on that tab. Arcane Distillers can be purchased from any Syndicate for 50,000 standing.

As cosmetic helmets are exclusive to their frames, an Arcane Syandana is more flexible and can be attached to any frame. Arcane Enhancements cannot be applied to the older stat modifying Arcane Helmets.

Ranking Up
Arcane effects can be reapplied to increase in power up to four times the base value. Each application takes an additional Arcane and they must all be of the same type. Ten total Arcanes are required to reach rank 4. Using a different Arcane type will overwrite the old effect with the new effect at rank 1.

Effects
When their trigger condition is met Arcane cosmetics provide a short duration buff. The effects do not stack. While the effect is active the duration will be renewed by triggering it again. If an Arcane Helm and Syandana with the same enhancement are worn simultaneously, each triggers independently with its own chance, making the effect more likely to trigger but not more powerful or longer lasting.

Arcane Revives
If the player has a fully ranked Arcane cosmetic (except the passive Arcanes) equipped, they will be able to revive themselves once each mission using an Arcane Revive. This number is increased to 2 if two fully ranked Arcane cosmetics are equipped. Unlike normal revives, Arcane Revives reset at the end of the mission.

Rarity
,, and  are very common and most of the time, Law of Retribution (non-nightmare) will award one of these. The nightmare version of the Law of Retribution, however, will only give arcane enhancements of the rare tier as rewards. This makes the uncommon tier arcanes the de facto rarest arcanes in Warframe.

Rarity is indicated by the number of connectors on the bottom and the number of chevrons on the top of the inventory icon.