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If you’re grinding toward the Corrupted Excalibur (Saber Alter) in Sailor Piece, the Morgan Remnant is one of the first materials you’ll need to stockpile. It’s the most common rare drop from the Corrupted Knight boss, making it your gateway into the late-game Alter progression tree. Here’s everything you need to know to farm it efficiently and use it wisely.
| Item | Drop Source | Drop Rate | Key Use |
|---|---|---|---|
| Morgan Remnant | Corrupted Knight | 15% | Corrupted Excalibur crafting |
| Alter Essence | Corrupted Knight | 5% | Corrupted Excalibur crafting |
| Corruption Core | Corrupted Knight | 1.3% | Corrupted Excalibur crafting |
| Corrupt Crown | Corrupted Knight | ~0.59% | Corrupted Excalibur + Ascension 10 |
| Corrupt Tyrant Title | Corrupted Knight | 1% | Required title for crafting |
The Morgan Remnant is a rare boss-drop material in Sailor Piece dropped exclusively by the Corrupted Knight boss on Boss Island. With a 15% drop rate, it’s the most farmable item in the Corrupted Knight’s loot table, a welcome relief compared to the 1% Corrupt Tyrant Title or 0.59% Corrupt Crown.
Despite being the easiest item to collect, you’ll need 15x Morgan Remnants just for the Corrupted Excalibur unlock, so consistent farming is still essential.
You can’t summon the Corrupted Knight without Dark Grails. These drop from regular enemies and high-level mobs across all islands. The Quake fruit is great for mass-farming mobs — use it at Shinjuku Island for efficient Dark Grail collection.
Teleport to Boss Island using any dock portal. Locate the Boss Summoner NPC in the center of the island.
Spend the following resources to summon the boss:
The Corrupted Knight spawns with 750,000,000 HP in the arena.
The boss drops Morgan Remnants at a 15% rate per kill. You’ll typically collect them while chasing rarer drops. Keep repeating runs — you need 15 for Corrupted Excalibur crafting.
Pro Tip: Always fight in a private server. On public servers, other players can deal damage to your summoned boss, which reduces your personal damage percentage and lowers your reward quality. You must deal at least 10% of the boss’s total HP to qualify for drops.
| Crafting Recipe | Morgan Remnants Needed | Other Key Materials |
|---|---|---|
| Corrupted Excalibur | 15x | Corrupt Tyrant Title, 25x Dark Grail, 8x Alter Essence, 3x Corruption Core, 1x Corrupt Crown |
The Morgan Remnant is currently used only in the Corrupted Excalibur unlock recipe. You trade all materials to the Corrupted Knight NPC sitting on top of the large stone hand monument on the right side of Boss Island. This unlocks the Saber Alter melee fighting style, one of the strongest endgame specs in the game.
The Corrupted Excalibur grants a full moveset including Flash Beam (60M DMG), Double Slash (90M DMG), Blade Dance (250M AoE DMG), and a devastating F Move reaching up to 3 billion damage at high stat builds.
For more on related gear and builds, check out our Sailor Piece Bosses Guide, Sailor Piece Titles Guide, and Sailor Piece Tier List.
You need 15x Morgan Remnants to craft the Corrupted Excalibur (Saber Alter) fighting style. This is the only current use for the material.
The Corrupted Knight (formerly Saber Alter) on Boss Island is the only source. It has a 15% drop rate per kill.
Interact with the Boss Summoner NPC on Boss Island and spend 1x Dark Grail, 650,000 Money, and 650 Gems.
Yes. You can trade with other players using the in-game Trade button or connect with the Sailor Piece community on Discord to find trade partners.
Farm in a private server with a high-damage melee or fruit build, maximize your Luck stats, and run repeated Corrupted Knight summons. With a 15% drop rate, you’ll accumulate 15 remnants faster than any other required crafting material.
