Oddly-shaped Opal

Survivors of the Void - DLC Content Oddly-shaped Opal is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info.Oddly-shaped Opal
Reduce damage the first time you are hit.
Increase armor by 100 (+100 per stack) while out of danger.
Rarity	Common
Category	Utility
Stats
Stat	Value	Stack	Add
Armor	100	Linear	+100

The Oddly-shaped Opal is an item in Risk of Rain 2, added in the Survivors of the Void expansion.

After 7 seconds of not taking damage, the holder gets the Survivors of the Void - DLC Content
Opal Armor is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
Click for more info. Opal ArmorSurvivors of the Void - DLC Content
This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
Click for more info.Opal Armor (Buff)
Increase armor outside of danger.Gain +100 armor. Removed on hit. buff, increasing armor by 100 (+100 per stack) until they take damage again.

Math

The amount of damage that the Opal mitigates can be quickly found with $Opals/(Opals+1)$. One Opal reduces damage by 50%, two by 66.66%, so on and so forth. This value differs slightly depending on the character's base armor, however.

• Because armor stacks hyperbolically, having more than a few Opals quickly becomes redundant; for instance, having 5 Opals gives 83.33% damage reduction, while having 6 gives 85.71% damage reduction.

Opal(s)	DR%
1	50%
2	66,6%
3	75%
4	80%
5	83,3%
6	85,7%
7	87,5%
8	88,8%
9	90%

Notes

• If a hit is negated by Tougher TimesTougher Times
  Chance to block incoming damage.
  15% (+15% per stack) chance to block incoming damage. Unaffected by luck. or Survivors of the Void - DLC Content
  Safer Spaces is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
  Click for more info. Safer SpacesSurvivors of the Void - DLC Content
  This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
  Click for more info.Safer Spaces
  Block the next source of damage. Corrupts all Tougher Times.
  Blocks incoming damage once. Recharges after 15 seconds (-10% per stack) Corrupts all Tougher Times., the Opal Armor buff is not lost.
• Damage taken from the Shrine of Blood or REX'sREXREX is a half robot / half plant that uses HP to cast devastating skills from a distance. The plant nor the robot could survive this planet alone – but thankfully they have each other.
  Class: Ranged
  HP: 130 (+39 per level)
  Damage: 12 (+2.4 per level)
  Armor: 20
  Umbra: Symbiotes "plant" skills that consume health will also cause the Opal Armor buff to be lost. These damage sources are also not reduced by armor, so the Opal will not decrease the costs.

Tips

• This item pairs exceptionally well with Safer Spaces, allowing the player to completely negate 1 incoming hit and then greatly mitigate another.

Lore

//--AUTO-TRANSCRIPTION FROM UES [Redacted] --//

"...You think this planet is as bad as they say?"

Liz sat in silence among her fellow soldiers. She, like the rest of her squadron, had been taken from the middle of a firefight in the galactic outback and brought before an old UES veteran. Liz was used to debriefing by now, it all blended together in her head. Something about monsters, and the missing UES Contact Light.

"...Dunno." Liz murmured as she turned a small, oddly-shaped hunk of opal in her hand. It was one of the only things she had that reminded her of Parker. Of when things were calm, and peaceful.

"...Heh, I don't think a shiny rock will do much," A soldier joked. Liz's brow furrowed under her helmet. "Yeah, probably not... but..."

Liz took a deep breath and slipped the opal back into her pocket. "It just helps."

Version History

Survivors of the Void

• (Undocumented) Added New Item: Oddly-Shaped Opal