To get Saber Alter / Excalibur Morgan in Lineage Piece, farm Ryuudo Keys from the normal Saber boss, clear the Ryuudo Cave dungeon for the required materials, then return to the Saber Alter seller NPC on Legends Arena Island.
Saber Alter, also called Excalibur Morgan or Saber V2, is tied to Ryuudo Cave and its three-phase dungeon loop. The grind starts on Legends Arena Island, then moves between the normal Saber boss, the dungeon portal, and the Saber Alter boss until your material list is finished.
- Saber Alter seller NPC location in Lineage Piece
- Saber Alter requirements and material sources
- Ryuudo Key drop and Ryuudo Cave entry
- Ryuudo Cave phases for Saber Alter materials
- How to get Saber Alter / Excalibur Morgan in Lineage Piece
- Best repeat route for Saber Alter farming
- Saber Alter mastery after Excalibur Morgan
- Frequently Asked Questions
Saber Alter seller NPC location in Lineage Piece
Start on Legends Arena Island and look for the Saber Alter seller NPC. This is the NPC you return to after farming the materials, currencies, and dungeon drops needed for the unlock route.
The loop is straightforward: kill the normal Saber boss for Ryuudo Keys, spend those keys to enter Ryuudo Cave, clear the dungeon phases for materials, then come back to the seller NPC when the buy list is complete.
Saber Alter requirements and material sources
| Requirement | Amount | Where to get |
|---|---|---|
| Corrupted holy sword | 1 | Saber Alter boss in Phase 3; 2.9% drop chance |
| Dark mana core | 3 | Saber Alter boss in Phase 3; 13.05% drop chance |
| Servant covenant | 5 | Medusa in Phase 1; 23.2% drop chance |
| Dragon blood | 10 | Saber Alter boss in Phase 3; 33.35% drop chance |
| Grail mud | 750 | Mobs in the Phase 2 dark room survival event |
| Coins | 20 million | Standard currency grind |
| Gems | 2,000 | Standard gem grind |
The buy list combines rare boss drops, dungeon materials, and standard currencies. Reach a strong late-game setup before committing to the farm; current Saber Alter content is aimed around level 1700, and Excalibur Morgan is also needed before starting the later Saber Alter mastery quests.
Corrupted holy sword is the slowest required material because it has the lowest listed drop rate among the purchase materials. The Saber Alter boss can also drop Alter’s outfit at 7.25% and the Tyrant King title at 3.7%, but those are separate from the core buy list.
Ryuudo Key drop and Ryuudo Cave entry
A Ryuudo Key drops from the normal Saber boss on Legends Arena Island at a 7.25% chance. Farm that boss until you have keys, then use a key to open the Ryuudo Cave dungeon portal.
KEY!Each dungeon attempt matters because the needed drops are split across different phases. If you only need grail mud, Phase 2 is your focus; if you still need rare materials, you need to reach and defeat Saber Alter in Phase 3.
Farm extra Ryuudo Keys before entering Ryuudo Cave so a failed or dry run does not send you back to the normal Saber boss after every attempt.
Ryuudo Cave phases for Saber Alter materials
| Phase | Objective | Drops |
|---|---|---|
| Phase 1 | Defeat Medusa, who has 510 million HP | Servant covenant |
| Phase 2 | Survive the dark room for 60 seconds by killing mobs or avoiding them | Grail mud |
| Phase 3 | Defeat the Saber Alter boss | Dragon blood, dark mana core, corrupted holy sword, plus optional outfit and title drops |
Ryuudo Cave has three phases, and each one either blocks progress or supplies a required material. Bring your best damage setup for the final fight; the Saber Alter boss has 1.02 billion HP, and a strong weapon such as Yhwach helps keep runs consistent.
How to get Saber Alter / Excalibur Morgan in Lineage Piece
Use this route to move from the island NPC to the key farm, dungeon clears, and final material turn-in.
STEP 1/9
Go to Legends Arena Island
Find the Saber Alter seller NPC on Legends Arena Island before starting the farm.
STEP 2/9
Check the buy list
Make sure you are farming for one corrupted holy sword, three dark mana core, five servant covenant, 10 dragon blood, 750 grail mud, 20 million coins, and 2,000 gems.
STEP 3/9
Farm the normal Saber boss
Kill the normal Saber boss on Legends Arena Island until a Ryuudo Key drops at its 7.25% chance.
STEP 4/9
Open the Ryuudo Cave portal
Use your Ryuudo Key to enter Ryuudo Cave and start the dungeon run.
STEP 5/9
Defeat Medusa in Phase 1
Kill Medusa to progress, with servant covenant dropping from this boss at a 23.2% chance.
STEP 6/9
Survive the dark room in Phase 2
Stay alive for 60 seconds and farm grail mud from the mobs in this phase.
STEP 7/9
Fight Saber Alter in Phase 3
Defeat the Saber Alter boss for dragon blood, dark mana core, and the low-rate corrupted holy sword.
STEP 8/9
Return to the seller NPC
Once every required material, coin, and gem amount is complete, go back to the Saber Alter seller NPC on Legends Arena Island.
STEP 9/9
Repeat the Ryuudo Cave loop
Keep farming keys, clearing all three phases, and killing Saber Alter until the full requirement list is done.
Video help
Best repeat route for Saber Alter farming
Run the grind in batches instead of treating every dungeon entry as a one-off. Build a stock of Ryuudo Keys, spend them on consecutive Ryuudo Cave clears, and use each run to make progress on both the common materials and the rare boss drops.
Inside the dungeon, do not rush past Phase 2 if you still need grail mud. The mobs there are the farm, so use the survival timer to collect as much as you can before moving into the Saber Alter fight.
After Phase 3, check your remaining list before going back to key farming. Most players will finish dragon blood and dark mana core before corrupted holy sword, so plan on repeating full clears until that final rare drop lands.
Saber Alter mastery after Excalibur Morgan
After obtaining Excalibur Morgan, you can move into the Saber Alter mastery line on Legends Arena Island, near the vendor NPC. Those quests use Excalibur Morgan directly, including damage requirements, Ryuudo Cave tasks, and later Extreme Mode Saber Alter clears.
Equip Excalibur Morgan before working on mastery progress. Treat that as a separate post-unlock grind rather than part of the initial material farm.
Frequently Asked Questions
Where is the Saber Alter seller NPC in Lineage Piece?
The Saber Alter seller NPC is on Legends Arena Island, the same island where you also farm the normal Saber boss for Ryuudo Keys.
How do you get a Ryuudo Key?
Kill the normal Saber boss on Legends Arena Island. The Ryuudo Key has a 7.25% drop chance from that boss.
Where does corrupted holy sword drop?
Corrupted holy sword drops from the Saber Alter boss in Phase 3 of Ryuudo Cave at a 2.9% chance.
Where do you farm grail mud?
Grail mud comes from mobs in Phase 2 of Ryuudo Cave, during the dark room survival section.
What is the hardest Saber Alter material to get?
Corrupted holy sword is the hardest required material because it has the lowest listed drop chance among the Saber Alter purchase materials.
More questions⤵
Do you need to clear all three Ryuudo Cave phases?
Yes, full clears are the cleanest farm because servant covenant, grail mud, and the Phase 3 Saber Alter drops all come from different parts of Ryuudo Cave.
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