Spawns a familiar that flies around the room in a manner similar to the Boom Fly and explodes on contact with an enemy dealing 60 damage to all enemies within its blast radius, and 10 damage to the enemy it touched.
It will respawn 10 seconds after exploding, or upon entering a different room.
This item belongs to the Beelzebub (Transformation) set. Collecting three items from this set will transform Isaac into a giant humanoid fly.