Captain Blade's Midnight Star

The  is a Grenade Mod manufactured by Torgue.

Special Grenade Effects

 * Abnormally high damage for a MIRV grenade, 0 Fuse Time
 * Curse of the Cackling Designer! Child grenades spawned will instead fly at the thrower instead of a regular radius

Usage & Description
Throwing the grenade beyond your target will throw the powerful child grenades targeting you, and hit the enemy, works best with larger enemies. The Child grenades are not limited by any range, and will seek you out from whatever distance, however they are targeting your feet, so they can not follow you well if you are higher then the child grenades. it is also possible to throw it while running, easily dodging the incoming child grenades, and thwart followers.

Drop Guide
It is a Reward for the Message in a bottle quest at Magnys Lighthouse.