Damage Boost
From Starbounder - Starbound Wiki
Damage Boost is a buff that can be gotten briefly during Ancient Vault boss fights. When a player destroys the last of the boss's minions, it will create a purple octagonal zone similar to those summoned from staves. The zone will last approximately 5 seconds and the buff will last approximately 10 seconds, giving the player a very large multiplicative damage increase of ~400%.
