"Access" to the Soulbound Chamber to break down more items/weapons to imbue/level up your weapons
A permanent ability to extract Planar Essences from any weapon that has energies that are "Planar"
Notes on Using the Extract Planar Essence Ability
Planar weapons that can be leveled are destructible, Legendary or better, and level 100+. It also must not have the "NO-VALUE" tag. The weapon does not have to be repaired.
The only way to obtain a planar weapon essence is by converting a planar weapon.
Each time the planar weapon levels up, it receives a 5% buff to base Ability Modifier, Potency, Resolve, and Primary attributes (this is in the description in the weapon's Examine window).
You can't see the weapon's Planar Level until it is level 1 or higher, at which point the Examine window will display "Planar Level 1"
There is currently no way to see how much "experience" your Planar Weapon has except immediately after adding a Planar Weapon Essence essence, when the amount of experience currently and needed for the next level is displayed in your chat window.
You always have to go to the Soulbound Chamber in order to add essences to your weapon.