The Temporal Sanctum is one of the most challenging and rewarding dungeons in Last Epoch, offering players the unique opportunity to craft Legendary gear by upgrading items with Legendary Potential. This dungeon features a distinctive time-travel mechanic that requires players to shift between two eras-the Ruined Era and the Divine Era-to navigate through its maze-like layout and defeat its powerful boss, Chronomancer Julra Last Epoch Gold.

Accessing the Temporal Sanctum
To enter the Temporal Sanctum, players need a Temporal Sanctum Key, which drops randomly from enemies and can be target-farmed from Timeline bosses or the Arena of Champions (though the Arena has a low drop rate). Once you have a key, head to the dungeon entrance located in the Ruined Coast of the Ruined Era. Starting from the Shining Cove in the Imperial Era, you travel northeast to a large stone door, then through a portal to the Ruined Coast, navigating past obstacles and killing Ortra'ek the Survivor to unlock access to the dungeon.

Dungeon Mechanics: Temporal Shift
The core mechanic of the Temporal Sanctum is the Temporal Shift ability, which lets you instantly switch between the Ruined and Divine Eras. Each era has different enemies and obstacles-snake enemies with poison and elemental attacks in the Divine Era, and void enemies in the Ruined Era. Some walls and paths only exist in one era, so players must alternate between timelines to find a viable route to the exit and progress through the dungeon.

Difficulty and Rewards
The dungeon offers four difficulty tiers (Tiers 1 to 4), with higher tiers increasing monster health and damage but also improving the quality of rewards. Completing the dungeon allows access to the Eternity Cache, a crafting device where you can combine a Unique item with Legendary Potential and an Exalted item to create powerful Legendary gear. This makes the Temporal Sanctum crucial for endgame crafting and character progression.

Boss Fight: Chronomancer Julra
At the dungeon’s end, players face Chronomancer Julra, one of the toughest bosses in Last Epoch. Mastery of the Temporal Shift mechanic is essential to survive her attacks and defeat her. Upon victory, players gain access to the Eternity Cache and valuable loot, including crafting materials for Legendary items.

Tips for Success
1. Prepare for heavy Poison and Void damage by stacking resistances above 75% to survive high-tier runs.
2. Use Temporal Shift frequently to navigate past era-specific obstacles buy Last Epoch Gold.
3. Farm keys efficiently by targeting Timeline bosses.
4. Coordinate with party members, as only one key is needed for group entry.