Runes and essence
Use Casthor Essence on chosen equipment
Casthor Essence can substantially change eligible gear, but permanently makes the item untradeable and limits further Essence use.
WHERE & HOW TO FARM
Use Casthor Essence on chosen equipment
Seasonal gear crafting interface; Casthor Essence is also named as an Agony Wave reward.
Before you go
- Obtain Casthor Essence.
- Select Rare grade or higher gear that is worth keeping.
- Accept that the item will become untradeable and unavailable for other Essence crafting.
- Review the item's remaining Casthor uses and any Revitalization requirements.
Farming steps
- Compare the candidate item with your current gear and decide whether it is worth a permanent crafting commitment.
- Check the item's grade and the Casthor Essence use count in the crafting interface.
- Read the displayed warning about tradeability, other Essence restrictions, and possible option changes.
- Apply Casthor Essence only after confirming the intended item and accepting the risk.
- Inspect the new Quality and options; compare them with the prior item state and your build needs.
- If uses are depleted, use Casthor Revitalization Essence only if the item still merits further crafting and the interface allows it.
- Equip or retain the result if useful; replace the base rather than forcing more crafts when it is no longer competitive.
- Keep Casthor for an item with a strong base and relevant options; the outcome can also reduce its performance.
- Treat the no-reversal warning as a real decision point and avoid experimental use on gear you may trade.
Repeat, collect and use
Repeatable on eligible gear while you have Casthor Essence and remaining item uses. Each use has lasting restrictions; Revitalization is a separate, limited recovery step.
Common mistakes
- Using Casthor on gear you may sell or trade: the item becomes untradeable.
- Expecting other Essences to remain usable afterward: only Casthor Revitalization Essence is allowed under the stated restriction.
- Assuming a positive result is guaranteed: options can change or be removed, so compare the outcome before committing further.
When to stop or switch
Stop crafting once the gear meets your build target, becomes worse than an available replacement, or has no remaining uses worth restoring.
Sources & fact checks
What you can get here
Open a guide to find other locations and see what the item is used for.