- What to know
- Quick overview of Anti-Magic sword unlock
- Where to find Anti-Magic sword in Sailor Piece
- How to enter Crystal Defense mode with Crystal Keys
- How to complete Crystal Defense mode successfully
- How to get the Anti-Magic sword from drops or currency
- Why AFK farming is a popular strategy
- Tips to speed up your Anti-Magic sword grind
What to know
- The Anti-Magic Sword is tied to the Crystal Defense game mode on Punch Island
- You need Crystal Keys dropped from high-level NPCs to enter the mode
- The sword can drop from bosses or be purchased using mode currency
- Efficient farming strategies like AFK grinding can significantly speed up the process
If you are aiming to obtain one of the most sought-after weapons in Sailor Piece, the Anti-Magic Sword, you will need to combine preparation, combat efficiency, and smart farming strategies. This guide walks you through everything in a structured way so you can unlock it without wasting time.
Quick overview of Anti-Magic sword unlock
| Feature | Details |
|---|---|
| Location | Punch Island |
| Game Mode | Crystal Defense |
| Entry Requirement | Legendary Crystal Key |
| Unlock Method | Boss Drop or Purchase |
| Cost (Alternative) | 5,000 Crystal Coin |
| Difficulty | Moderate to High |
Where to find Anti-Magic sword in Sailor Piece
Your journey begins at Punch Island, a key late-game area where most high-tier content is located. Once you spawn, moving straight forward will lead you toward new NPCs and the Crystal Defense mode entrance. This is where all the action happens.

The mode itself is designed as a wave-based survival challenge, where your goal is not just to defeat enemies but to protect a central crystal from being destroyed. This core mechanic makes positioning and damage output extremely important.
How to enter Crystal Defense mode with Crystal Keys
Step 1
Head to high-level NPC zones on Punch Island, as these enemies have the highest chance of dropping the required keys.

Step 2
Defeat enemies repeatedly to farm Legendary Crystal Keys, since the drop is not guaranteed and depends on RNG.
Step 3
Stockpile multiple keys before entering, because one run may not be enough to secure the sword.

The grind here can feel repetitive, but it is essential. You will want to optimize your farming by using high-damage fruits or AoE abilities to clear enemies faster.
How to complete Crystal Defense mode successfully
Step 1
Enter the Crystal Defense mode using your key, which will initiate waves of enemies attacking the crystal.

Step 2
Focus on eliminating enemies quickly, as letting too many accumulate can overwhelm the crystal.
Step 3
Prioritize bosses when they appear, since they are your main source for the Anti-Magic Sword drop.

Step 4
Survive as many waves as possible, because higher waves yield better rewards and more currency.
This mode rewards both skill and endurance, and you will notice that runs become more efficient once you learn enemy patterns and spawn timings.
How to get the Anti-Magic sword from drops or currency
Step 1
Defeat bosses inside Crystal Defense mode, as they have a percentage-based drop chance to give the Anti-Magic Sword.

Step 2
If luck is not on your side, collect Crystal Defense currency from waves and victories.
Step 3
Save up 5,000 currency to purchase the sword directly, which acts as a guaranteed method.

The drop system is RNG-based, so you might get the sword early or after many attempts. Because of this, many players prefer to combine both methods simultaneously.
Why AFK farming is a popular strategy
Many players lean toward AFK farming strategies because the Crystal Defense mode allows semi-passive grinding when you have strong abilities. By setting up consistent AoE damage or auto-attacks, you can farm currency over time without constant input.
| Reward Type | Description |
|---|---|
| Crystal Currency | Earned from defeating enemies and waves |
| Boss Drops | Chance to obtain Anti-Magic Sword |
| Experience | Helps level up your character |
| Materials | Useful for other upgrades |
However, relying entirely on AFK methods can slow your progress if your build is not strong enough. You still need to ensure your character can handle waves efficiently without failing the objective.
Tips to speed up your Anti-Magic sword grind
You will benefit greatly from focusing on high burst damage builds, since clearing waves faster directly increases your efficiency. Staying mobile and positioning yourself near enemy spawn points can also reduce pressure on the crystal.
It is also important to farm keys in batches rather than one at a time, as this reduces downtime between runs. Over time, consistency becomes more valuable than luck.