Ossuary boss set. Bone erosion: physical spin hits add 0.87% 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 · Expert difficulty. Collect the drop and extract to keep it.
Base protection
- Equipment slot
- Back
- Bonus health
- +41
- Defense
- +2
Yo-yo stat bonuses
Innate effects
- Physical vulnerability per spin stack
- 0.87%
Unlockable passive
Erosion mastery: +0.754% 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 1.3× quality multiplier. Health upgrades add 13 HP per level; defense upgrades add 1.3 per level, before Depth.
Bonus health: +0.
Bonus defense: +0.
- Physical vulnerability per spin stack
- 0.754%
Other qualities
- Ossuary Mantle · Common · 14 health / 1 defense
- Ossuary Mantle · Uncommon · 20 health / 1 defense
- Ossuary Mantle · Rare · 28 health / 2 defense
- Ossuary Mantle · Legendary · 56 health / 3 defense
- Ossuary Mantle · Mythic · 77 health / 4 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.