Wanderer Minstrel Stone(Lower)

For each Level of Frigg's Song:
Decreases Fixed Casting Time by 0.1 second.
When equipped with Wanderer Minstrel Stone(Garment):
Increases damage of Severe Rainstorm by 15%.
When equipped with Wanderer Minstrel Stone II(Garment):
Increases damage of Reverberation by 15%.