The complexity of the Multiverse is beyond mortal comprehension, so analogy must be used when considering it. One popular conception is to picture the Worlds of the Multiverse as docks on the eternally branching Eridanus, an infinite cosmic waterway of streams, tributaries, distributaries, confluences, and canals. The would-be traveller between the worlds must study and prepare rigorously for such a journey, for the Eridanus has its own forms of whirlpools, weirs, cataracts, currents, and predators, which make passage between the Worlds difficult and dangerous. Few of those who have attempted the voyage alone have survived, and fewer still have moored at their intended destination.
But for the traveller who is wise, there is hope. The Archangel Sachiel is master of the Eridanus and can give passage to those travellers whose interdimensional mission is of service to the Light. He can be visualised as a white-bearded man with iridescent wings, bearing a trident. The worthy traveller will be invited to board his shining blue-green vessel, The Aquamarine, to be ferried safely to the required destination.
Sachiel is content to traverse the Eridanus observing the Worlds and assisting their inhabitants. He will do so until the last days, when the Seas of Chaos will rise and all the currents converge on the Wastes of Blood, and then The Aquamarine will carry its captain to join his brother archangels in the final battle with the Dark.
