When HP falls below 70/75/80/85/90%, increases Charged Attack DMG by 30/35/40/45/50%, and Charged Attacks become much harder to interrupt.
In Game Description
A replica of the famed sword of Arundolyn, the Lion of Light. Feel the power of a legendary hero as you hold this sword in your hand! Imagine yourself as the great warrior himself! Note: Daydreaming not recommended in live combat.
How to Get Ferrous Shadow?
Obtainable from gacha.
Weapon Upgrade Materials
Here’s all material used to upgrade Ferrous Shadow: