So I now have several Legendary pieces of gear, but when I am at the Occultist, there’s one gear piece in particular I’d like to “extract” (got another Legendary of the same slot and like the aspects they both have) that can not be “extracted.” How come?
Along similar lines, I had gotten a aspect/codex from running a specific dungeon. While it was listed in my Codex, it did not show in the “aspects” tab of my character screen. How come?
You cant astract an aspect you put on the gear. Once you use an aspect on gear… you cannot extract it to use it again.
Because aspects are only applicable to certain gear slots. Press U, click Codex, and you can see what gear slots each type of Aspect can apply to (Defensive, Offensive, Resource, Utility, Mobility). For instance, Mobility aspects can only apply to Amulets and Boots.
To add to what Phail said… you gain aspects from two sources: dungeons and gear. The aspects gained from running specific dungeons are listed in your codex of power, and always have the lowest % for whatever their effect is… however they can be added to gear infinitely.
You can also gain aspects by extracting it from gear, which allows you to imprint it once only on gear, but it cannot be extracted again. The % roll for effects on these aspects is random, but is saved when you extract it.
As an aside, this means that if you get a very high % roll on a good end-game aspect, you might want to save it for an item you won’t replace for a long time rather than blowing it on a low level item, as sometimes those high rolls can be hard to come by…