In the Last Epoch, true power doesn’t just drop from the sky, you forge it yourself. Legendary items are the crown jewels of gear progression, and their creation hinges on one mechanic: Legendary Potential.

What is Legendary Potential 

Legendary Potential (or LP) is a special attribute that can randomly appear on most Unique items in Last Epoch. Think of LP as a gateway, the more LP a Unique has (1 to 4), the more affixes it can inherit from an Exalted item when turned into a Legendary.

• LP 1-4 = Max number of affixes your Unique can steal.
• The higher the LP, the rarer the drop.
• Not all Uniques can roll with LP, but their dungeon-upgraded versions can.

How Rare is LP?

Don’t expect 4LP drops every other run LP rarity scales with the power of the Unique. Weak Uniques? Decent shot at 2LP. Endgame beasts like Omnis? You’re looking at scientific notation levels of rarity.

What You Need to Craft a Legendary

To use Legendary Potential, you’ll need to venture into the Temporal Sanctum, a dungeon only accessible with a special key. But first, collect your ingredients:

1. A Unique with Legendary Potential.
2. An Exalted item with the same base type (i.e., boots → boots).
3. A Temporal Sanctum Key (drops from Monoliths).

Make sure the Exalted item has fully filled affix slots, only filled slots can be transferred.

Enter the Temporal Sanctum

Located in the Divine Era, south near The Coast, the Temporal Sanctum is a dungeon with tiers (Tier 1–4) that limit the item level you can use. Choose your difficulty wisely, higher tiers unlock crafting for high-end gear.

• One Legendary craft per dungeon run.
• No do-overs. If the result isn’t what you want, tough luck, you’ll need new items.

How to Use the Eternity Cache

Once you’ve cleared the dungeon, you’ll find the Eternity Cache in a gilded chamber of the Divine Era. Here’s how it works:

1. Insert your LP Unique and your Exalted item.
2. Double-check the Exalted’s affixes: bad rolls = wasted power.
3. Confirm and switch to the Ruined Era via the time portal.
4. Your freshly minted Legendary item awaits.

The process is random. You won’t choose which affixes get inherited (and sealed affixes are ignored), so prepare for some RNG. If it rolls junk, back to the grind.

Tips for Legendary Forging

• Use Rune of Creation to duplicate good Exalted items before sacrificing them.
• Save 3LP+ Uniques until you get a perfect donor item.
• Circle of Fortune Rank 6 doubles LP chances, a must for serious farmers.
• Merchant’s Guild lets you buy LP Uniques directly if you’re trading-savvy.

Legendary Potential is a way to build-defining gear in Last Epoch. It’s not just about luck, it’s about patience, planning, and knowing when to hold or fold. With the right combination of LP and affixes, you can craft gear that turns your build from solid to unstoppable.