Chinese-server data. English names and effects are provisional; untranslated details remain in Chinese.
Prayer stone
Lighthouse Prayer Stone
灯塔祷石
PurpleUniversalExtra effect · The slot’s highest Attunement reaches grade B
Source: Random drop
Prayer stone effects
At the start of a friendly unit’s action, there is a 50% chance to remove 1 negative-effect stack from that unit.
Extra effect
The slot’s highest Attunement reaches grade B
Increase the chance to remove a negative effect by another 20%.
Acquisition source
Random drop
Recorded source: Random drop.
Source: 遗忘之海 · 祷石记录器 (Chinese)Lore
Item story
Spirals of light at the center of this stone glow and fade of their own accord in the dark. Some fishing villages are said to set it atop a cliff, where its beam cuts through thick fog better than an ordinary lighthouse.