If you’ve started moving into the late-game side of Sailor Piece, you’ll notice something pretty quickly…
Everything starts getting expensive.
And rare.
One of those items that almost every serious player ends up chasing is the Phantasm Core.
This isn’t just another drop you casually pick up. It’s a key item that unlocks one of the strongest fighting styles in the game, which is why players grind it over and over again.
Let’s break it down properly so you know exactly what to do and don’t waste time.
How to Get Phantasm Core in Sailor Piece
There’s only one way to obtain this item.
You need to defeat the King of Heroes (Gilgamesh) boss.
And just like other high-tier bosses in the game, this one doesn’t spawn naturally. You have to summon it yourself.
Step-by-Step Method
First, use any portal and head to the Boss Island.
As soon as you spawn, you’ll see the Boss Summoner NPC right in front of you.
Interact with it and scroll down until you find King of Heroes.
To summon this boss, you need:
| Requirement | Amount |
|---|---|
| Divine Grail | 1 |
| Money | 500,000 |
| Gems | 500 |
Once you submit these, the boss will spawn in the center of the island.
Damage Requirement (Very Important)
Just like other bosses in Sailor Piece, rewards are not guaranteed for everyone.
To qualify for drops, you must deal:
At least 10% of the boss’s total HP
If you don’t meet this, you won’t get rewards, no matter what.
Phantasm Core Drop Rate
Now let’s talk about the real challenge.
The drop rate is extremely low:
~0.5% to 0.75%
Which basically means…
You’re not getting this in one or two runs.
This is a grind item, and you should expect multiple boss fights before getting one.
SEE ALSO:
- (11) All Sailor Piece Runes & How to Get Them (April 2026)
- Primordial Rune Sailor Piece Guide
- Sailor Piece Atomic Mastery Guide (Update 7.0)
- Sailor Piece Codes (March 2026) – Free Gems, Rerolls, and Rewards
- Sailor Piece Warlord Race Guide (How to Get & Buffs Explained)
Fastest Way to Farm Phantasm Core
Most players struggle here not because of difficulty, but because they farm inefficiently.
If you want to speed things up, focus on this.
1. Build for Maximum Damage
The system rewards higher damage.
So your priority should be:
• Strong sword
• High DPS fighting style
• Good devil fruit
The faster you deal damage, the better your chances.
2. Always Play in a Team
Let’s be honest, this boss is not meant to be farmed solo easily.
Instead:
• Join other players
• Focus on consistent damage
• Finish runs faster
But make sure you still hit that 10% damage mark.
3. Use Luck-Based Boosts
Luck matters a lot for rare drops like this.
Try using:
• Runes
• Titles
• Clans
• Accessories
Even small boosts help over multiple runs.
4. Server Hop Smartly
Waiting for someone to summon the boss wastes time.
After finishing a run:
• Leave the server
• Join a new one
• Look for active boss fights
This alone can double your farming speed.
Can You Trade Phantasm Core?
Yes, you can trade it with other players.
But since it’s a rare item:
• Expect high-value trades
• Cheap offers usually won’t work
• Players prefer equal rarity items
If you hate grinding, trading is your shortcut.
How to Use Phantasm Core in Sailor Piece
This is where the real value comes in.
1. King of Heroes Fighting Style
This is the main reason players farm Phantasm Core.
To unlock it, you need:
| Item | Requirement |
|---|---|
| Phantasm Core | 1 |
| Ancient Shards | 6 |
| Throne Remnants | 12 |
| Golden Essence | 3 |
| Gems | 22,500 |
| Money | 25,000,000 |
| Title | Golden King |
Once unlocked, this fighting style gives you:
• Strong AoE attacks
• High damage output
• Great farming potential
Perfect for late-game progression.
2. Ascension Level 8
Phantasm Core is also used in progression.
For Ascension 8, you need:
• 2 Phantasm Cores
• 3 Slime Cores
• Additional requirements
Ascension boosts:
• Damage
• Luck
• Overall efficiency
Is Phantasm Core Worth Farming?
Yes, but only if you’re at the right stage.
If you’re early game, this grind will feel impossible.
If you’re mid to late game, it’s completely worth it because:
• Unlocks top-tier fighting style
• Helps with farming efficiency
• Improves your overall build
Common Mistakes to Avoid
Most players slow down their progress without realizing it.
Avoid these:
• Not dealing enough damage
• Trying to solo unnecessarily
• Ignoring luck boosts
• Staying in one server too long
FAQs
What is the drop rate of Phantasm Core?
Around 0.5% to 0.75%, making it one of the rarest items.
Can you buy Phantasm Core?
No, it cannot be purchased with Robux. Only boss drops or trading.
How many Phantasm Cores do you need?
At least 1 for the fighting style, and more for ascension.
Is it better than Soul Flame?
Both are important, but Phantasm Core is more focused on fighting styles.
Final Thoughts
Phantasm Core is one of those items that truly tests your patience in Sailor Piece.
You won’t get it quickly, and that’s exactly why it’s valuable.
But if you focus on optimizing your runs, dealing consistent damage, and farming smart instead of hard…
You’ll get it much faster than most players.
Ankit kumar is a Digital Marketing Manager and a fan of the COD franchise and Roblox. Perfection is his forte, and the same can be seen in his work. He loves to invest his time in creating awesome content, doing SEO and discovering the latest games.