Lunar Effects

The three moons are tied to the three Spirit aspects of Faith, Mana, and Luck.   The large, white, fast moon, Aribra, is associated with Mana.
The middle, blue, bright moon, Erthisa, is associated with Faith.
The small, red, slow moon, Opinuck, is associated with Luck.   These moons are associated with the amount of Faith, Mana and Luck that regenerates in a person. For example, Mana is regenerated in wizards, sorcerers, and other users of magic every time Aribra reaches its zenith over that person. Since Aribra appears to travel across the sky daily, a wizard can renew their Mana every day, plus an extra boost then Aribra is full. Similar situations occur with the other moons, with Erthisa renewing Faith points and Opinuck renewing one's Luck pool. However, because it takes longer for those moons to reach their respective zeniths, their points are updated less frequently.