Borderlands 4 How to Unlock The Legendary Booming Skull Grenade

Skully is a Order Grenade

Accursed - Unknown Weapon Effect

Unlock / Farm Location:

• Skully can only Be acquired during The "Horrors of Kairos" Halloween event.,
• Rift Champion Events spawn randomly around the map as you complete other Events (e.g. Side Quests, Driller Sights Ect.)
• Defeating the bosses of a Rift Champion Events Rewards you a Loot Chest in your Inventory where you have a chance to get your hands on the Booming Skull.