| Type | Swords |
| Rarity |  |
| How to get | Wish, Chest |
| Base Attack | 39 |
| Substats | ATK |
| Passive | Bane of Water and Ice |
| Description | Increases DMG against opponents affected by Hydro or Cryo by 12/15/18/21/24%. |
Table of Contents
In Game Description
A reliable steel-forged weapon that serves as a testament to the great adventures of its old master.
How to Get Cool Steel?
Obtainable from wish and chest.
Weapon Upgrade Materials
Here’s all material used to upgrade Cool Steel:
| Level |  Mora | Ascension Material | Material 1 | Material 2 |
| Level 20 | 5.000 |  x2 |  x2 |  x1 |
| Level 40 | 10000 |  x2 | x8 | x5 |
| Level 50 | 15.000 | x4 |  x4 |  x4 |
| Level 60 | 20.000 |  x2 | x8 | x6 |
| Level 70 | 25.000 | x4 |  x6 |  x4 |
| Level 80 | 30.000 |  x3 | x12 | x8 |
Special Ability Based on Refinement
Just like any other weapon, Cool Steel also have special effect. The higher rank of weapon refinement, the effect will become stronger with highest number at refinement rank 5.
| Refinement Rank | Description |
| Refinement 1 | Increases DMG against opponents affected by Hydro or Cryo by 12%. |
| Refinement 2 | Increases DMG against opponents affected by Hydro or Cryo by 15%. |
| Refinement 3 | Increases DMG against opponents affected by Hydro or Cryo by 18%. |
| Refinement 4 | Increases DMG against opponents affected by Hydro or Cryo by 21/%. |
| Refinement 5 | Increases DMG against opponents affected by Hydro or Cryo by 24%. |
