Athreos

Athreos is the God of Passage on Theros. In his role of easing the passage from life to death, he is associated with white and black mana.

Description
The shrouded Athreos is the River Guide, the divine ferryman of the dead across the Rivers That Ring the World to the Underworld. Silent, bent, and tattered, he patiently fulfills his role. Athreos is never without his signature staff, a gnarled length of dark wood. When he lays his staff over one of the five Rivers, it becomes a boat to carry the dead.

Athreos cares little for the other gods' conflict with mortals: his primary concern is safe passage for the dead. When he gathers the newly dead to be ferried across the Five Rings, Athreos sends skeletal griffins to fetch those who stray. The custom on Theros is to craft a funerary mask of clay for the newly departed. In this way, the identities of the deceased are "framed" for Athreos, so that he can mark their proper passage. Such masks are broken into shards called ostraka and used as barter in the Underworld.

Ravos was an oracle of Athreos and Kunoros, Hound of Athreos is the guardian dog of the god.

Inspiration
The character of Athreos is inspired by Charon, Greek mythological figure and ferryman to the underworld.