River Styx

The River Styx.

The River Styx (pronounced STIKS) is an interplanar river that originates on the plane of Abaddon, but snakes its way throughout the Outer Sphere and touches on the planes of Axis, Hell, the Outer Rifts, and the Maelstrom, before finally pooling at the base of Pharasma's Spire.

In Abaddon

On the plane of Abaddon, the Styx is the undisputed realm of Charon, Rider of Death. It is also home to the vicious hydrodaemons, who lurk beneath its surface, ready to attack anyone who survives the deleterious effects of the river. The surface is patrolled by thanadaemons, who pilot their skiffs and have even been known to ferry travelers across the Styx.

The Styx also feeds the Plaguemere, the colossal swamps where Apollyon, Rider of Pestilence, resides.

In Hell

As it winds its way through Hell, the Styx feeds the swamps of Stygia, the plane's fifth layer.

In the Outer Rifts

The Styx passes through or is connected to the Abyssal realms of Cerebulim, Everglut, Ishiar, Kurnugia, the Midnight Isles, Moonbog, and Undersump. The town known as Taste of Anguish is located on a branch of the Styx in the Outer Rifts.