From Avalon MU Online Wiki
About kalt stone
- With this stone you can upgrade any Horn of Fenrir to a new one and upgrade 4 wings to level 7.
- When updating the wings, all options remain and sharpening.
- To create a Jewel of Upgrade, you need to collect 5 pieces of Kalt Stone.
- Kalt Stone drops at Blood Castle, Devil Square events, 15% drop chance 10% to success.
Kalt stone table