Excalibur Umbra is a variant Warframe based on the original Excalibur. He has increased armor and energy, and also has polarity slots that allow him to use the Umbral Mods. Excalibur Umbra cannot be farmed in the way many other Warframes are and is instead gotten by completing a particular quest.
How To Get Excalibur Umbra
To get Excalibur Umbra, you need to complete The Sacrifice quest. You need to have finished the Apostasy Prologue to get this quest. If you have yet to take part in the Apostasy Prologue, visit your quarters on the Orbiter. You should see an energy orb floating near the window. Interact with it, then play through the short quest.
Once that is done, you can access The Sacrifice quest in the Codex.
The Sacrifice Quest
In this guide, I will give valuable information that will help guide you through the quest but will try my best to avoid spoilers.
Investigate Sentient Energy
The first step of the quest sends you to Lith, on Earth. When you land, kill the Grineer and then search the courtyard area using the Codex Scanner or Synthesis Scanner. You will find items in the following locations:
- beside the tree
- to the back left of the courtyard
- to the right of the tree, near a rock
- around the middle of the courtyard, near a gravestone
- to the right of the walkway near the courtyard entrance
For this part, you need to match the blue symbols at the Orokin Memory Cipher terminal with the blue symbols that can be found in the area. You need to physically find the symbols in the level for it to work.
The first Memory Cipher requires two symbols; the second requires four symbols. If you struggle with solving the second one, after finding all the symbols, Ordis will eventually help you.
Play through the rest of the level to get to the next part, set aboard the Orbiter. This is narrative-heavy, so I will avoid talking about it here.
Follow the Excalibur Umbra through the level. When you find him he is resistant to all damage, so use your Void Blasts to stun him, then use Transference on him. This will give you access to a new memory from the Warframe.
When you find Excalibur Umbra on Neptune, he will have a new shield making him immune to Void Blast damage. Hit him with your Void Beam to remove the shields, then the Void Blast, then perform another Transference.
Explore Lua (again)
Once again, the Excalibur Umbra will have a new shield making him immune to Void Blast damage. Hit him with your Void Beam to remove the shields, then the Void Blast, then perform another Transference. Once you take control of the Umbra, make your way to extraction.
Return to Earth
You will return to the courtyard to confront an NPC. Engage in a fight with the NPC and take out all the Sentient enemies to enter a cutscene and finish up the quest.
When you eventually return to the Orbiter, you will now have access to the Excalibur Umbra Warframe.