Title Lord of Darkness,Prince of Devils
Portfolio Tyranny Slavery Pride Contracts
Alignment Lawful Evil
Worshipers Slavers, bureaucrats, tyrants
Worshiper Alignment LN,LE,NE
Domains Evil, Fire, Law, Magic, Trickery
Subdomains Arcane, Ash, Deception, Devil, Divine, Smoke
Favored Weapon Mace
Symbol Red pentagram
Allows creation or rising of undead: Yes but only under situational contracts.
Favored Animal(s) Serpent
Sacred Colors Black,Red


Using a ruby-bladed knife, inscribe symmetrical cuts into the flesh of another creature—preferably an unwilling sentient being you own or hold dominion over. The blade may be solid ruby or forged of metal and edged with serrated ruby fragments. Devout priests of Yarnos take pride in crafting elaborate daggers made entirely of ruby. Drain the victim’s blood into a bowl of bone made from the skull of a sentient humanoid. The amount of blood drained is up to you; you don’t have to drain so much that you make the creature weak or too useless to serve you. Use the bowl of blood to draw a large pentagram on the ground. Kneel within the pentagram and concentrate on the glory you will bring to the Prince of Darkness’s name. Gain a +4 profane bonus on saving throws against fire effects.


Yarnos believes that the strong should rightfully govern the weak, who in turn owe their masters unwavering obedience. He loves negotiations and contracts, especially those that give one of the parties a distinct, hidden advantage over the other. He expects and appreciates flattery, but its never fooled by it, seeing it as a negotiation tactic, as well as a duty those in inferior positions owe their betters.

Yarnos stands among the oldest beings of the multiverse. Fragments of heretical tomes like the Yarnian Monograph, the Book of the Damned, and the Script of Flies claim he was among those responsible for the creation of the stars, the planets, and the first mortal things, but that his pride led to a conflict over the free will of lesser creatures, sparking a war between order and chaos.

The bravery of the goddess Eyvra forced him to acknowledge his murderous role in the war, and he abandoned the battlefield, swearing that one day his opponents would understand the true depth of the conflict-a time when he would return and his inferiors would beg for the order he embodies. While many theologians and immortal agents of the gods deny the legitimacy of this Yarnian account of the multiverse's prehistory, the supreme age of the topic and blurring between truth and lies make these records difficult to outright dismiss.

Yarnos is a god of rigid hierarchies, imposing systems where every creature knows its place, the strong rule over lesser beings, and the weak are properly subservient to their superiors. He is an omnipotent tyrant who creates and destroys as he sees fit. What mortals call "evil" is the natural order of the multiverse to his vast and ancient understanding-water flows downhill, fire burns, and the strong dominate the weak.

The Prince of Darkness is worshiped by creatures all across Erin, though in most parts of the world this is limited to power-hungry diabolists, small cults, and harsh militaristic orders. However, Yarnos does not seek worship; he merely wants obedience and acknowledgment that his will is both truth and law. He grants his worshipers magic not as a reward for their prayers, but to help bring the rest of the universe into his service. He revels in the art of negotiation and delights in deals that appear fair but that actually give one party a disparate advantage-those of superior intellect should recognize when such methods are used against them, and those who don't see these traps deserve to have their dullness exploited.

Yarnos himself is handsome, eloquent, tactful, patient, and incredibly brilliant. When crossed he is wrathful, terrifying, and destructive, though these periods are always brief, and he quickly regains his composure. He believes one's word is a binding contract, with consequences should it be broken. As such, he is always careful with what he says or agrees to. He opposes freedoms if they interfere with the process of governance, and thinks humility is a burden only the weak must bear. He is a domineering and manipulative deity, hell-bent on discovery and conquest. He has little use for qualities such as gentleness, compassion, or nurturing. He considers those who indulge in such as weak, unworthy, cowardly beings.

Following his example, his servants espouse selfish, emotionless, and merciless behaviors, viewing romance, tenderness, and sincerity only suitable for their uses in manipulation. In art Yarnos is frequently shown as a red-skinned human with black horns, hooves, and a pale aura of flames. As an ancient being, countless interpretations of his appearance have fallen into and out of fashion among his mortal followers, yet always the features of a fearful immortal tyrant prevail. Most believe his devilish form is his true one, though persistent lore speaks of a more fiendish shape with constantly bleeding wounds. Yarnos can take the form of any creature and uses this ability to intimidate, manipulate, or intrigue those he speaks with.

He favors red gemstones and usually appears with a large ruby pendant, mace, or even a breastplate made entirely of a single dazzling gem. Yarnos has little interest in direct interaction with mortals, including members of his faith. He assumes mortals are weak but useful dupes and won't go out of his way to aid most. Occasionally, however, mortals of articular power, mercilessness, and finesse attract his attention. If the desire strikes him, he might manipulate fate to aid such tyrants, so long as doing so ultimately furthers his own ends. He does not hesitate to punish failure or even lethally assure that incompetence is not repeated. For casual infractions, he might taunt a mortal with a brief sensation of burning agony or cause writing to appear to burst into flame or weep blood.

He has been known to assign lesser devils to guide potent but troublesome worshipers, letting his infernal servants prod them in useful directions as necessary. Yarnos' symbol is an inverted pentagram, though some cults use a pentacle instead. Yarnos' extremely hierarchical priesthood includes clerics, inquisitors, sorcerers (especially those with the infernal bloodline), conjurers, fallen paladins, and cruel soldiers. Many scheming bards and vicious monks are also affiliated with his church.

The Church

Most followers of Yarnos are power-hungry priests, diabolists, greedy slavers, ruthless lawyers, wicked enchanters, or decadent nobles in search of secret pleasures.In places where his worship is open, Yarnos' followers are much like people in other lands, except they believe in harsh punishments for lawbreakers, are accustomed to the appearance of imps in the company of spellcasters, and are openly tolerant of slavery, considering these things a mild price for keeping order.

Many common people active in the church remember the chaos and suffering of civil war, or fear the violence and barbarism in some places and gratefully support the secure-if tyrannical stability of Yarnos' faith. In these lands, city guards, government officials, artisans, and even farmers and laborers willingly pay lip service to Hell if the alternative is being robbed by bandits or strung up by an angry mob. Most still pray to other gods for health and prosperity, which Yarnos and the church allow as long as the Prince is acknowledged as superior and these other faiths do not challenge his position.

True followers of Yarnos believe in law, order, and knowing their place in the grand scheme; in many cases, they aspire to a higher position and work to prove they are worthy of it. They study their betters to learn necessary skills, watch their equals and jockey for position, and keep an eye on their inferiors for signs of exploitable talent or dangerous ambition. They keep their friends close and enemies crushingly closer, usually acting through the proper channels rather than resorting to base tactics like assassination. Most Yarnos find it far more effective to eliminate a rival by unearthing evidence (showing your skill in the process) than by a wasteful murder.

Services to Yarnos require chanting long phrases without error, tolling bells, participating in or receiving public punishments, and other acts of domination or submission reinforcing one's position within the church. Blood sacrifice is also not unknown at Yarnian gatherings, typically the killing of a bull, goat, rooster, or another animal held as being particularly regal, virile, or benevolent. Humanoid sacrifices are not unheard of, but such are typically only required of groups that have fallen out of favor with the Prince of Darkness, are performing a magical rite, or have a member attempting to leave their fold. Minor devils, usually imps or bearded devils, are occasionally conjured to participate in the events, but sometimes more powerful entities might appear to show the Prince of Darkness's favor (or that of one of his more powerful minions). Services in temples converted from another faith often have rituals designed to blaspheme the deity once honored there, particularly on holidays celebrated by the previous tenants.


Public temples dedicated to Yarnos thrive in cities of open worship where they often share space with the nation's bureaucracy, although secret shrines are scattered across Erin. Public temples built specifically for Yarnos have a distinctly gothic, diabolical aesthetic. Secret temples dedicated to Yarnos are usually single, hidden rooms or basements, away from the public eye and secured against accidental discovery. Temples range from grand, opulent affairs with silk curtains and gold fixtures to altars of blackened metal in dark places. The Prince of Darkness appreciates the trappings of wealth but is more interested in sincere devotion to his cause than incidental displays. However, he realizes that greedy mortals enjoy these displays as evidence of their own power and success, allowing such ostentation to fuel their greed for more and their need for him.

Shrines to Yarnos are usually simple things like standing stones, symmetrical rocks or trees with odd marks, or even statues of prominent but reviled rulers. The faithful have a feel for these places, whether or not they are clearly marked, and some are truly ancient, dating to an age when early humans were still trying to understand the patterns in the night sky and the darkness in their own hearts.


If you are a true worshiper of Yarnos, your word is your bond,and while you pride yourself on your ability to make clever deals and leave yourself escape clauses, breaking a contract is a sin of the highest order. Similarly, despite your manipulations, maneuverings, and political infighting skills, you know better than to disobey a direct order from someone higher in Yarnos’ good graces—either mortal or fiend. In punishing transgressors, you have no mercy unless it serves your interests, nor do you expect any for yourself.Wizards will never make enchantment or conjuration a forbidden school, since those schools are deeply connected to his belief.

A Priest's role

Priests of Yarnos are careful in their exercise and pursuit of power, understanding that a foolish over extension might leave them vulnerable to those watching for any weakness. Within nations that openly worship, Yarnos' priests are a force of order, keeping people in line or torturing prisoners to extract information. Outside these nations ,priests work with slavers, bureaucratic governments, despots, and nobles in positions of power (or those hoping to be in power). They whisper dark promises in the ears of the desperate, arrange meetings between people of influence, and act as judges in lawless lands. Many travel to bind or destroy rogue fiends (especially demons), seeking to convince folk that their faith supports order and opposes wanton destruction.

Priests honor devils as envoys of their lord, greater or lesser players in the immense infernal bureaucracy that all right-minded individuals should join. Of course, they see lemures and other minor devils as expendable, and non-lawful fiends as even more so. Unlike typical conjurers who control devils with magical force, many Yarnian magic-users parley carefully with devils, rewarding those in the Prince's favor and abusing those out of it. An Yarnos conjurer Like Hell itself, Yarnos' church is carefully ordered, with a precise hierarchy of reports and detailed means of determining who is superior or inferior within the church-two priests of distant temples can easily establish their relative ranks with only a few sentences. Of course, some priests are effectively independent, especially in lands where their religion is forbidden, and use their magic to pursue their own agendas and interpretation of Yarnos' will. Members of the organized church tend to look down upon such unaffiliated priests (much as academy-trained mages look down upon hedge wizards) and strongly encourage them to join a known temple.

Yarnos inquisitors command intense respect and fear. These priests seek out disease and corruption in the tree of the unholy in order to maintain orthodox beliefs. In lands where Yarnos worship is public, the inquisitors are easy to spot in their iron masks and black robes, and are always alert to news of heresy or blatant violation of church doctrine. They maintain a network of contacts and informants, rewarding news with coin, prestige, and the authority to arrest and interrogate in addition to their duties within the church hierarchy.

Holy Text

The Archfiend's doctrine is recorded in the Yarnos Monograph, though that work is greatly simplified and relies on numerous appendices and supplementary volumes. The common version of the text is a mere 1,000 pages, and covers history, the writing and exploitation of contracts, the nature of power, the purpose of law, the fallacy of evil, propaganda, diplomacy, subtleties of speech, the hierarchy of Hell, and dozens of other topics related to rulership, all within the context of the faith. Its supplemental texts number in the hundreds, each focusing on, interpreting, and expounding on particular topics. To those unfamiliar with the complete library associated with the Yarnos Monograph, a religious discussion between two zealots might appear to be a battle over who can produce the most obscure reference. Because the church idealizes laws and rules, knowing which ones trump others and which ones need to be bent or broken to advance a greater cause is crucial. A worshiper could commit an egregious crime against the church but still be forgiven or even rewarded if he found a way to justify it by brilliantly citing some forgotten bit of scripture and proving the act was beneficial to Yarnos.


A truly ancient being, old even among the gods, Yarnos' concept of time is boggling to mortals, and he couldn't care less about marking a specific day of the week, month, or year as more important than any other-they all belong to him, and mortals should bow to him every day. However, the church does recognize a few holidays based on mortal traditions, often set in counterpart to the holy days of opposing good faiths. Thus, seeing it as an extra day to serve their god, giving him additional prayers.

Relationship with Gods

Yarnos is willing to deal with any god or entity as long as he believes that being will uphold its end of the bargain. Even wily Alessa has worked with him in the past, though he typically considers the fickle goddess beneath his notice. Despite ethical differences, he has been a patron of Callie, an aide to Cadmus, a supplier to Hirai, and an adviser to Samaria, though it is not something his sometime partners care to admit. Though he is evil, he is quite charming and can often persuade reluctant deities to temporarily set aside their differences with him for the purpose of mutually beneficial arrangements.

When dealing with potential enemies, he is careful to keep the terms of any agreement clear and obvious lest these parties become too suspicious of treachery, which would damage his perfect bargaining reputation.

Multiple cadres of lesser deities serve Yarnos. The least of these are the infernal dukes, countless tyrants who rule fiefdoms throughout Hell, and the malebranche, burgeoning infernal dukes who seek dominion and power through the conquest of mortal worlds. These deities hold very specific areas of concern and might be worshiped by mortal cults or honored as saintlike patron beings among Yarnos' faithful.

Yarnians regard other religions with amusement. They worship young gods who possess a fraction of the power of Hell's master, deities who will eventually fall in line with Yarnos' will. They confidently assert power when dealing with other churches are naturally inclined toward the followers of lawful deities, for they understand the need for order, and their dedication to law means they can at least agree upon rules within which to operate, while the congregants of chaos earn nothing but scorn.

Yarnos' Dark Knights

Perhaps the most populous and well known types of dark knights, Much like one would expect from a worshiper of Yarnos they tend to be charismatic, power hungry and deceitful when it suits them. They are tolerated or accepted (whatever the case may be) due to their uphold of the law and code of honor. When people think of Dark Knights, they think of Yarnian Dark Knights.

  • My word is my bond, I will never break it but i will be careful of what promises I make.
  • I will never break a contract, nor will I sign one unless I am completely satisfied with it.
  • The Strong rule over the weak, I shall guide and protect the weak who pledge obedience to me or those legitimately above me.
  • I will never be ignorant of the laws in which I currently reside, I will never purposely break them, I will however find ways around them and stay within the confines of the law without bringing attention to myself.
  • I will respect legitimate authority, and I will obey any placed above me unless their goals compromise my conviction of law and order.
  • I am a gentleman or a lady, I will conduct myself as such. Lack of discipline is lack of strength
  • I will always join an organized and recognized temple by my faith. I will never join a unaffiliated cell. I will encourage unaffiliated worshipers to do the same.
  • If people cannot be trusted to obey the law out of their own sense of civility, they will obey out of fear of my stern hand.

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