The Event Helmet is a rare summon item in Broken Blade, the Norse-inspired action RPG on Roblox. It exists for one purpose. You use it on the Explosion Island to spawn the Headless Knight boss, which is the only way to farm the Eye Patch material needed to craft the Explosion weapon.
Quick answer: Any boss in Broken Blade can drop the Event Helmet, but bosses from Niflheim Island onwards have the highest drop rate. Once you hold one, take it to the boss summoning area on the Explosion Island to spawn the Headless Knight.

Where the Event Helmet drops in Broken Blade
The Event Helmet is a global drop, meaning it can fall from any boss across the map. The catch is that low-tier bosses drop it rarely. Drop rates climb sharply once you reach the higher-level islands, so farming early-game bosses is slow and inefficient.
Bosses found on Niflheim Island and the islands after it give the best returns. These enemies hit harder and carry large health pools, so it is worth reaching at least the mid-game before you start farming. Teaming up with other players speeds up each kill and lets you cycle through respawns faster.

Best bosses to farm for the Event Helmet
The Niflheim Island bosses are the practical targets. They sit on the higher drop-rate tier and respawn quickly enough to grind in sessions.
| Boss | Spawn location | Respawn time |
|---|---|---|
| Velik | First floor of Niflheim Island, near the mob | 20 seconds after defeat |
| Nivaron | Second floor of Niflheim Island, next to the Soul Devourer's Altar | 30 seconds after defeat |
| Gelaros | Cave area on Niflheim Island | 30 seconds after defeat |
Tip: Equipping a Title that grants a Luck bonus raises your odds on rare drops, which trims the time you spend farming the Event Helmet.
How to summon the Headless Knight with the Event Helmet
Once an Event Helmet is in your inventory, the summon itself is quick. The Headless Knight only appears on the Explosion Island, which was previously called the Eclipse Island or Event Island.
Step 1: Open your inventory and confirm you are holding at least one Event Helmet. Without it in hand, the summon option will not appear.
Step 2: Interact with any Teleport Portal and choose the Explosion Island option to travel to the event area.
Step 3: Walk to the boss summoning area on the island and use the Event Helmet to spawn the Headless Knight.

You know the summon worked when the Headless Knight appears in the arena and the fight begins. The boss currently only spawns in Nightmare difficulty and has a very large health pool, so go in with mid- or late-game gear, or bring a group.
Why the Event Helmet matters for the Explosion weapon
The Headless Knight is the gatekeeper for the Eye Patch, a key crafting material. The boss drops the Eye Patch at a 50% chance, so roughly every second clear yields one. You need 65 Eye Patches in total to craft the Explosion, the game's first 5-Star weapon, on the Explosion Island.
That makes the Event Helmet the first link in a long crafting chain. Farm helmets from Niflheim bosses, summon the Headless Knight, collect Eye Patches, then repair the Explosion blade alongside its other requirements.
| Material | Amount |
|---|---|
| Money | 1,500,000,000 |
| Gems | 20,000,000 |
| Buster Piece I | 3,000 |
| Buster Piece II | 1,500 |
| Buster Piece III | 800 |
| Eye Patch | 65 |
| Fire Seed | 10,000 |
Treat the Event Helmet as a farming target rather than a one-off pickup. Run the Niflheim bosses with a Luck Title equipped, stockpile a few helmets, and you will have a steady supply of Headless Knight summons whenever you need more Eye Patches for the Explosion.