Athreos, God of Passage

All mortals are destined to face Athreos, the River Guide, when their lives come to an end. The god of passage ferries the dead across the Tartyx River, conveying each mortal soul to its destiny in the Underworld. For most people, Athreos embodies the greatest mysteries of existence—the terror and wonder of life’s last moment and the revelation of one’s ultimate fate in the afterlife. Athreos is no judge, though. The veiled, silent god undergoes no deliberations and makes no exceptions. The River Guide reads the truth of each soul and bears it unfailingly to its proper place in the Underworld. There is no haggling and no sympathy on Athreos’s skiff, the god having heard and denied every conceivable mortal plea.
Athreos appears as a gaunt figure cloaked in ragged robes and a collection of golden masks. What little can be seen of his body is unsettling, its gray flesh stretched thin over a barely human skeleton. The River Guide is never without his ancient staff, Katabasis, which he transforms into the ferryboat he uses to ply the Rivers That Ring the World. Though the deity’s shrouded form gives no clue, many mortals consider Athreos to be male, but the River Guide cares for terms or labels no more than any other force of nature. Athreos can change shape but rarely, if ever, takes on other forms.

Athreos’s Influence
Most mortals focus on the River Guide’s role in their own deaths. Countless mortal superstitions prescribe ways to garner Athreos’s favor, but all Athreos demands of those he transports is payment: a single coin of any minting or value. The River Guide has an expansive definition of what constitutes a coin, from actual stamped currency and jewelry to shiny beads or opalescent shells. Ultimately, he seems most concerned with whether a mortal has prepared for death, keeping payment ready out of respect and as a personal memento mori. Those whose bodies are burned, buried, or otherwise disposed of along with valuables deliberately intended for the River Guide discover that they can make use of such items when trading for Athreos’s services. Spirits that reach the shores of the Tartyx River unprepared, though, risk being stranded, as Athreos refuses to ferry those who can’t pay.
Athreos is also invoked as the god of passage, as well as the deity with dominion over borders, boundaries, and that which is “neither.” Those who undertake journeys, especially dangerous ones, often drop a coin into a fountain or a body of water in apotropaic acknowledgment of the River Guide. Bridges and borders are also places where Athreos is commonly remembered, with many such sites being marked by motifs of rivers or spirits. Additionally, phenomena that are neither one thing nor another, defying simple classification, are often considered to be within Athreos’s province—most notably the state between life and death, but also echoes, phantom sensations, and the feeling of déjà vu.

Athreos’s Goals
Athreos endlessly works to maintain the balance between Nyx, the Underworld, and the lands of the living. The River Guide sees himself as a servant of the mortal world and knows nothing of the glamor, honor, or mystery mortals often ascribe such to him. Rather, he does what must be done, and should some cosmological condition fall out of sorts, the River Guide and his servants work with silent efficiency to restore balance.

Divine Relationships
Athreos cares little for the dealings of the other gods. As long as other deities don’t impinge on the border between life and death, either by overstepping their bounds or by trying to draw the dead back into life, the River Guide has little to do with them. More than once, this isolation has put Athreos in silent conflict with Heliod and Erebos, both of whom subtly resent Athreos for limiting how much each can meddle in the other’s realm. At the same time, the River Guide’s role as a buffer between the two vindictive gods actively prevents their grudges from exploding into divine warfare.
Thassa bears a chilly respect for Athreos. In a time before reckoning, boundaries divided the god of the sea’s dominion from the Tartyx River. Though the god of the sea quietly resents sharing even a drop of water, she considers the River Guide to be a quiet, unobtrusive trespasser on her favored element and keeps her distance. Were her respect to wane, though, Thassa would eagerly vie to control the Rivers That Ring the World.

Worshiping Athreos
Most funeral traditions include small offerings and words of reverence to Athreos. Predominant among these traditions is burying or burning the dead with a clay funerary mask, to “frame” the identity of the dead for Athreos, and with at least one coin, so a soul might pay Athreos to ferry them to the Underworld. Some people are laid to rest with large amounts of grave goods. Memorial practices vary widely by culture, from tearful, somber affairs to lively celebrations. These rituals serve more as catharsis for the living than as meaningful boons to Athreos, though. The River Guide cares only for the single coin he’s owed by any who board his skiff.
During the feast of the Necrologion, which gives its name to the eighth month in the calendar of Meletis, pious souls silently spend the day reading ancient memoirs or writing messages for their own descendants.

Earning and Losing Favour

You increase your favour with Athreos when you honor him or the cycle of life and death through acts such as these:

• Providing coins and overseeing burial rites for those slain during a tragedy
• Ensuring that the deeds and knowledge of someone who has died are preserved
• Slaying a Returned and its associated eidolon

Your favour with Athreos decreases if you diminish the River Guide’s influence in the world, impede his work, or disrespect the dead through acts such as these:

• Denying a dying person their final rites
• Removing wealth from a corpse or defiling a tomb
• Aiding those who seek to escape from the Underworld, or who already have

Theros Pantheon

Athreos, God of Passage
Ephara, Goddess of the Polis
Erebos, God of the Dead
Heliod, God of the Sun
Iroas, God of Victory
Karametra, Goddess of the Harvest
Keranos, God of Storms
Klothys, Goddess of Destiny
Kruphix, God of Horizons
Mogis, God of Slaughter
Nylea, Goddess of the Hunt
Pharika, Goddess of Affliction
Phenax, God of Deception
Purphoros, God of the Forge
Thassa, Goddess of the Sea