Borderlands 4Bloomreaper Chests

Defeating Bloomreaper within a set time grants increasingly better reward chests.
The faster the kill, the better the rewards:

• > 4 min: 1 Chest
• 3–4min (Silver): 2 Chests
• 1.5–3 min (Gold): 3 Chests
• < 1.5 min (Platin): 4 Chests (100% Rainmaker and 33% Chance for 2×Legendary Enhancement)