Catha

Catha is the larger and closer of Exandria's two moons, considered the primary moon. The phrase "lunar cycle" commonly refers to Catha's cycles. It is associated with Sehanine, the Moon Weaver.

Description
Catha appears either pale blue or bright white in the sky, resembling Earth's moon, though Catha is a little closer than the moon is to Earth and so appears larger in Exandria's sky. It takes between 30 to 40 days to orbit Exandria, during which it waxes and wanes; this is the commonly referred to lunar cycle.

Symbolism
Catha functions as a symbol of the god, Sehanine, the Moonweaver. Most believe Sehanine created Catha to "bless the just with cunning and caution" and to cloak those who need "stealth and subtlety.” Other followers of Sehanine associate Catha with "the Moonweaver's cunning and grace," posing an alternative to her general association with trickery and illusions. They understand the light of Catha to favor the "goodhearted.”

Astronomy
Elven astronomers track the lunar cycles of Catha to predict the largest full moon of the decade, during which night the followers of Sehanine observe her holy day.

Magical phenomena
Catha's lunar cycles affect entities with bestial curses, especially nocturnal creatures. Furthermore, the lunar cycle of Catha rather than Ruidus influences entities with lycanthropy. In addition to curses, Catha's light can interact with necromantic magic during the full moon phase. As of at least 836 PD, reports exist of Catha's light coinciding with the raising of undead soldiers from the Battle of the Umbra Hills in Tal'Dorei.

Extraplanar phenomena
The lunar cycles of Catha connect to other beings, which may include demons per the speculation of Cobalt Soul archivists and others. Some worry that rare double solar eclipses cause the Material Plane and other planes to intersect calamitously.