Eberron Monk
Wizards harness mystical power through the study of arcane science. A cleric is a vessel that entreats for the aid of divine forces. Those who study the fighter’s disciplines harden their bodies and minds through purposeful repetition. The monk walks a step in each of these shoes. Beginning with a foundation of mental and physical discipline, a monk channels energy to force an impossible action to become possible, from moving with superhuman speed to striking with fists of flame. The sorcerers persuade the ambient energies all around them to do their bidding, while the monk focuses power within them and becomes a conduit with the strictest discipline. Morgrave Miscellany, page 44, gives examples of what playing a Monk in Eberron might look like.
In addition to the subclass options presented on dndbeyond, the following Monastic Traditions are also available:
Way of the Argent Fist
The Argent Fist uses ki energy to channel radiant power, healing the injured and blasting unclean creatures. This tradition was first mastered by followers of the Silver Flame, and the the Silver Forge has a number of fortress monasteries spread across Thrane. However, an Argent Fist could also be a champion of Dol Arrah, a Ghaash’kala orc, or even a warforged built to battle the undead.
- Source: Morgrave Miscellany, page 47
Way of the Reforged (Warforged Only)
As they are more philosophical than theological, it’s no shock that many warforged seek the way of a monk as a means to spiritual self-realization. While monks are often seen as those who eschew emotion, the Way of the Reforged actually embraces it; these warforged believe in experiencing life as other living creatures do, with the full spectrum of feelings. For adherents of the Way of the Reforged, theirs is often a path of extremes — a desire to freely experience emotion and discipline the mind and body.
- Source: Faithful of Eberron, page 37
Way of Sheshantol (Kalashtar Only)
Also known as the Shadow Watchers, the Way of Sheshantol originates with the martial traditions of the kalashtar in Adar. The Path of Light typically eschews violence, but their growing conflict with the Dreaming Dark has caused many to permit, if not outright endorse, the existence of warriors that can fight on their behalf. To this end, promising students are trained in the fortress monastery at Tashaltora to harness the power of their mind as a silent and hidden weapon to be used against their secret enemies.
This tradition also appears in a few variations throughout Sarlona. The Inspired teach it to the Fists of Dal Quor, an elite group of their Chosen warriors, and the prahdri of Haztaratain that guard the secret paths into Adar are often trained in the Way of Sheshantol as well.
- Source: Faithful of Eberron, page 28
Way of the Synod
Monks who choose the Way of the Synod are committed to the application and execution of the laws that guide their land and society. Those who study the foundational legal texts are righteous adepts of order who serve a greater calling. Monks of this path are revered as legal scholars and philosophical thinkers who have equal levels of mental and physical discipline. Governments will defer to the wisdom of a Synod as they implement or change their laws; Synods also help the broader church of the Sovereign Host to discipline lawbreakers and heretics.
- Source: Faithful of Eberron, page 8
Way of the Vanished Dreams
Kalashtar monks following the Path of Light founded this small and esoteric monastic tradition in the distant land of Adar, but individual disciples have come to Khorvaire in the hopes of teaching members of other races to unlock the "inner light" of psionic capabilities. They believe awakened minds can better defend themselves and those around them against the Dreaming Dark, Lords of Dust, and other malevolent enemies.
- Source: Eberron Archetypes, page 25