The Babylon Key is a craftable item in Sailor Piece. You cannot obtain it from chests or normal drops. Instead, you must craft it using rare materials and the Servant Race.
Once crafted, the key unlocks the King of Heroes F move and gives a +30% damage boost, making it one of the most valuable upgrades in the game.
Babylon Key Requirements
To craft the Babylon Key, you must have:
- 100× Broken Swords
- 5× Golden Essence
- 2× Phantasm Cores
- Servant Race (Mythical) equipped
If you do not have the Servant Race, the NPC will not craft the key.
Steps to Get the Babylon Key
Follow these steps:
1. Get the Servant Race: Reroll races until you obtain the Servant Race (Mythical).
2. Farm the required materials:
- Broken Swords (100) → Farm by defeating Slime Warriors on Slime Island.
- Golden Essence (5) → Drop from the King of Heroes / Gilgamesh Boss (≈1.5–2.5%).
- Phantasm Cores (2) → Also dropped by the King of Heroes / Gilgamesh Boss (≈0.5–0.75%).
3. Go to Boss Island: Use the portal to reach Boss Island.
4. Find the Babylon Key Crafter:
- Climb to the top of the left palm tree on the island.
- The Babylon Key Crafter NPC is located there.
5. Craft the key:
- Stand near the NPC and hold the E key.
- Submit the materials to receive the Babylon Key.
How to Use the Babylon Key
After crafting the key:
- Open your Inventory.
- Find the Babylon Key under the Items tab.
- Click the item and confirm.
This will unlock:
- King of Heroes F Move
- +30% Damage Buff
The key is one-time use, and the move unlock remains permanent.
Fast Farming Tips
To collect materials faster:
- Farm Slime Warriors for Broken Swords.
- Increase Luck Stat using the skill tree.
- Equip luck-boosting traits and titles.
- Unlock better Spec Passives on weapons.
- Stock Divine Grails before farming the boss to summon it repeatedly.
Quick Summary
- Craft the Babylon Key on Boss Island.
- Required materials: 100 Broken Swords, 5 Golden Essence, 2 Phantasm Cores + Servant Race.
- Use the key to unlock the King of Heroes F move and gain a 30% damage buff.
More guides: How to Get Abyss Sigil | Sailor Piece Tower Keys & Infinite Tower | Sailor Piece Sword Tier List