Chinese-server data. English names and effects are provisional; untranslated details remain in Chinese.
Prayer stone
Downpour Prayer Stone
暴雨祷石
BlueUniversalExtra effect · The slot’s highest Attunement reaches grade C
Source: Random drop
Prayer stone effects
During heavy rain, reduce enemy units’ Speed by 20.
Extra effect
The slot’s highest Attunement reaches grade C
Reduce Speed by another 10.
Acquisition source
Random drop
Recorded source: Random drop.
Source: 遗忘之海 · 祷石记录器 (Chinese)Lore
Item story
Patterns like sheets of rain overlap, almost carrying the sound of thunder and lightning.