---
title: "Iron wall (critical damage reduction)"
url: "https://karos-wiki.pages.dev/en/ssfam-6201"
lang: "en"
description: "Stones of this family add +60 s to the super skill's cooldown; the item description does not say so. (Verified)"
---

# Iron wall (critical damage reduction)

[Home](https://karos-wiki.pages.dev/en/) › Character › [Super skill stones](https://karos-wiki.pages.dev/en/superstones) › Iron wall (critical damage reduction)

Buff (self + party) · Cooldown added +60 s · 5 stones

Stones of this family add **+60 s** to the super skill's cooldown; the item description does not say so. (Verified)

| Tier | Stone | Effects | Cooldown added | Duration (Unknown) |
| --- | --- | --- | --- | --- |
| Small | [Small stone iron wall (Reinforcement)](https://karos-wiki.pages.dev/en/item-620101) | Critical damage reduction **+2%** | **+60 s** | 10 s |
| Medium | [The middle stone of the iron wall (Reinforcement)](https://karos-wiki.pages.dev/en/item-620102) | Critical damage reduction **+4%** | **+60 s** | 10 s |
| Large | [Large stone iron wall (Reinforcement)](https://karos-wiki.pages.dev/en/item-620103) | Critical damage reduction **+6%** | **+60 s** | 10 s |
| Rare | [Rare Iron Wall Stone (Reinforcement)](https://karos-wiki.pages.dev/en/item-620104) | Critical damage reduction **+8%** | **+60 s** | 10 s |
| Unique | [Unique Iron Wall Stone (Reinforcement)](https://karos-wiki.pages.dev/en/item-620105) | Critical damage reduction **+10%** | **+60 s** | 10 s |

## In-game descriptions

- [Small stone iron wall (Reinforcement)](https://karos-wiki.pages.dev/en/item-620101) When equipped on Buff Super Skill which is effective for yourself and your team, Reduce Critical Damage will be increased by +2%. (Combined via Instructer NPC)
- [The middle stone of the iron wall (Reinforcement)](https://karos-wiki.pages.dev/en/item-620102) When equipped on Buff Super Skill which is effective for yourself and your team, Reduce Critical Damage will be increased by +4%. (Combined via Instructer NPC)
- [Large stone iron wall (Reinforcement)](https://karos-wiki.pages.dev/en/item-620103) When equipped on Buff Super Skill which is effective for yourself and your team, Reduce Critical Damage will be increased by +6%. (Combined via Instructer NPC)
- [Rare Iron Wall Stone (Reinforcement)](https://karos-wiki.pages.dev/en/item-620104) When equipped on Buff Super Skill which is effective for yourself and your team, Reduce Critical Damage will be increased by +8%. (Combined via Instructer NPC)
- [Unique Iron Wall Stone (Reinforcement)](https://karos-wiki.pages.dev/en/item-620105) When equipped on Buff Super Skill which is effective for yourself and your team, Reduce Critical Damage will be increased by +10%. (Combined via Instructer NPC)

## Super skills these stones fit (16)

### Blader

[Iron Maiden](https://karos-wiki.pages.dev/en/skill-2004) · [Uncontrollable energy](https://karos-wiki.pages.dev/en/skill-2803) · [Master of Swords](https://karos-wiki.pages.dev/en/skill-2006)

### Paladin

[Pain Relief](https://karos-wiki.pages.dev/en/skill-4002) · [Retaliation](https://karos-wiki.pages.dev/en/skill-4003) · [Divine Fearlessness](https://karos-wiki.pages.dev/en/skill-4803) · [Incredible Vitality](https://karos-wiki.pages.dev/en/skill-4805)

### Rogue

[Bloody appetite](https://karos-wiki.pages.dev/en/skill-6810) · [Deadly Evil Sword](https://karos-wiki.pages.dev/en/skill-6812)

### Sorceress

[Mantle of Shadow](https://karos-wiki.pages.dev/en/skill-8003) · [Ruthless contract](https://karos-wiki.pages.dev/en/skill-8004)

### Bowmistress

[Predator](https://karos-wiki.pages.dev/en/skill-10004) · [National treasure](https://karos-wiki.pages.dev/en/skill-10010)

### Gunner

[Magic Vortex](https://karos-wiki.pages.dev/en/skill-16003) · [Rapid Fire](https://karos-wiki.pages.dev/en/skill-16009) · [Infrared sensor](https://karos-wiki.pages.dev/en/skill-16010)

[Super skills page →](https://karos-wiki.pages.dev/en/superskills)

## Other families of the same type (3)

[Invulnerability (fixed damage, movement -)](https://karos-wiki.pages.dev/en/ssfam-6202) · [Acceleration (movement speed)](https://karos-wiki.pages.dev/en/ssfam-6203) · [Life (max HP %)](https://karos-wiki.pages.dev/en/ssfam-6204)