You are a warrior on the front lines of a war beyond imagination. Other soldiers of the Harmonious Shield chase dromites through tunnels or glare at the Adarans across mountain walls. You? It's your job to go toe to toe with demons and monsters shaped by forces of madness. You've stared into raw chaos, and felt the heat of elemental fire. You'll be lucky if you live ten years in the service, but you wouldn't have it any other way. These horrors can't be left to prey on the innocent.
As an Edgewalker, you know just how fragile the world is. The wild zones are permanent battlegrounds, but the walls of reality can be breached anywhere, at any time. Also, extraplanar threats are only the beginning. Vampires, ghosts, rakshasas—fiends, undead, and aberrations are all your concern. You are the sentinel who walks the line between the natural and unnatural world. Your greatest challenge is to hold to your faith, lest you become the darkness that you battle.
You have no use for humor and no time for leisure. Evil is out there, and every minute you spend at peace is a moment you could serve in battle. Study those around you for any signs of possession or corruption. Never lower your guard, and never pass up an opportunity to defend an innocent from harm.
Not all soldiers live up to this ideal. Perhaps you are a fallen Edgewalker, one who has seen the power that lies in the darkness and now pursues it. You have abandoned the Path of Inspiration, and you care nothing for innocents. You conceal your true motives from your comrades, but when you enter the wild zones, you aren't thinking of the safety of Riedra; your only interest is your own gain. You intend to be a demon prince, the equal of any of the Inspired . . . and woe betide anyone who stands in your way.
Fallen or true, you were indoctrinated from birth in the Path of Inspiration. You were taught to believe in the il-altas, to believe that the Inspired are guided by the spirit of Riedra itself. You have seen the good that the Inspired have done for your people; you have fought beside Inspired lords against aberrations and fiends. Nonetheless, of all the people in Riedra, you are best equipped to realize the true nature of your overlords. But what do you do if you determine your beloved masters are alien terrors? If you speak out, you will be denounced as a heretic and slain. Perhaps you can work from within, helping dissidents and gathering information. Or you might flee to a foreign land. You know that the battle of the planes stretches beyond national borders; if you decide to fight the quori, you can fight them anywhere in the world.
Some Edgewalkers remain loyal to the Inspired even after learning the truth about the quori. The quori might be alien spirits, but they have brought peace and security to the people of Riedra. In many ways, the kalashtar agenda is as selfish as that of the Dreaming Dark. Finally, you might decide that you can no longer work for the Inspired, and that you must find your own path, fighting both the kalashtar and the quori.
Combat: You are a mortal fighting fiends and horrors. You expect to be outmatched by your enemies, and you must look for every possible advantage. Study your enemy. Don't just charge into battle and fight until you fall. Study. Observe. Adapt. If need be, retreat and reequip. You are not afraid to die in battle, but if there's a possibility of buying a later victory with retreat, do so. You are always ready to do battle, but you know that violence is not always the best solution. Many spirits can be bound by oaths or flattery. In such situations, words can be far more effective than weapons. Know your enemy, and choose your tools wisely.
Advancement: Edgewalkers are divided into two orders, the sentries and the inquisitors. A sentry might spend his entire career at one fortress. You most likely follow the path of the inquisitor, a roaming agent who can be sent anywhere in Eberron. Edgewalker inquisitors are unlikely to ever get promoted: Your skills are too useful in the field. You go where the Inspired send you. If you are true to your cause, personal wealth and luxury mean very little. If you are a fallen Edgewalker, you hope to use your knowledge of the planes to gain personal power. If you are a rebel, you seek to protect the people from supernatural danger, but this struggle could bring you into conflict with your former masters.
Missions: An Edgewalker sentry guards a specific manifest zone. Often this duty involves patrolling the perimeter, which is slashed and burned to provide a clear line of sight. Other times, you might be sent into the zone itself, to recover valuable resources or monitor experiments set in motion by the Inspired.
Edgewalker inquisitors are constantly in motion, and might be called in to investigate any supernatural threat or flare in planar activity. Your duties are not limited to Riedra. You might be sent to Syrkarn to battle rakshasas or to Xen'drik to investigate the planar magic of the giants. You could even be sent to Khorvaire to uncover the secret of the Mourning. This sort of assignment would provide you with a solid base for traveling the world and working with Khorvairian adventurers, while still remaining loyal to the Inspired.
Responsibilities: Whether you are a sentry or an inquisitor, your duties are simple. Follow the orders of the Inspired. Defend the innocent people of Riedra from extraplanar and supernatural horrors. In many ways, you have much in common with a templar of the Silver Flame, but you serve the Path of Inspiration, not a flame whose own followers admit is tainted by demonic influences