Ossuary boss set. Bone erosion: physical spin hits add 1.05% physical damage vulnerability, up to five stacks and 30% total per enemy. Lasts until room exit. Each piece contributes independently.
How to obtain
The Ossuary Weaver · Bullet Hell difficulty. Collect the drop and extract to keep it.
Base protection
- Equipment slot
- Body armor
- Bonus health
- +132
- Defense
- +8
Yo-yo stat bonuses
Innate effects
- Physical vulnerability per spin stack
- 1.05%
Unlockable passive
Erosion mastery: +1.05% physical vulnerability per spin stack, +0 maximum HP, +0 defense
Unlock this effect at Bram’s forge using banked resources. Its displayed values include this item’s 1.5× quality multiplier. Health upgrades add 15 HP per level; defense upgrades add 1.5 per level, before Depth.
Bonus health: +0.
Bonus defense: +0.
- Physical vulnerability per spin stack
- 1.05%
Other qualities
- Ossuary Vestments · Common · 24 health / 2 defense
- Ossuary Vestments · Uncommon · 34 health / 2 defense
- Ossuary Vestments · Rare · 48 health / 3 defense
- Ossuary Vestments · Epic · 70 health / 4 defense
- Ossuary Vestments · Legendary · 96 health / 6 defense
These are base stats before purchased upgrades and talents. Depth copies gain 2.5% health and defense per drop floor; passive yo-yo stats and proc chances do not gain Depth.