From Guild Wars 2 Wiki
“Fire a cluster bomb at target area. Detonate in midair for multiple explosions.
— In-game description [?]
- The undetonated bomb counts as the blast finisher and inflicts one stack of bleeding.
- The bomb can be detonated in midair using Detonate Cluster, dropping three bombs in a triangular pattern with each inflicting one stack of bleeding. The spread of the smaller bombs depends on the height when detonated. If detonated close to the ground, all three bombs can hit the same target.