Firestorm

When equipped with at least 1 flame weapon, increase flame ATK by 6%/7%/8%/9% and flame damage by 3.2%/3.8%/4.4%/5%. This set effect works in the off-hand slot, and only the set with the highest star rating will take effect.

Gain different effects based on the number of different elemental weapons equipped: Increase flame/frost/physical/volt damage by 4%/5%/6%/7% for every flame/frost/physical/volt weapon equipped. Increase final damage by 5%/6%/7%/8% for every altered weapon equipped. This set effect works in the off-hand slot, and only the set with the highest star rating will take effect.