For more than a thousand rears, Thassilon dominated western Avistan, erecting an arcane empire on the backs of countless slaves and subjugated races. From seven fractious domains, the rulers of the empire, the runelords, quarreled among themselves, each vying for dominance. The source of their powers, the rune magic discovered and cultivated by Thassilon's benevolent first emperor, Xin, paved the way for his ruthless inheritors to work feats of magical might whose effects still scar the land. Thassilon fell to ruin nearly 10,000 years ago, and nearly all traces of the once-vast empire have crumbled in the millennia since, save for the magically preserved monuments that litter the Varisian landscape.
THASSILONIAN RUNES
One of the great achievements of the Runelords of Thassilon was the creation of arcane runes empowered to infuse living flesh with magical power. With these arcane markings, the fundamentals of one's life force were altered, allowing the bearer to activate various magical abilities. Thassilonian runes resemble runic tattoos inscribed in the flesh with arcane inks and scar-inducing irritants. Their intricate forms are endless variations on the seven runes of sin magic. Any individual bearing a Thassilonian rune can make use of its abilities even if not a spellcaster.
A Thassilonian rune is considered a magic item. An individual is limited to possessing one rune, regardless of the creature's or the rune's actual size. The potent magics essential to these runes' function is disrupted by the addition of a second rune, preventing either from working. Once a rune is inscribed, it cannot be removed. Even the loss of that body part is not foolproof, for if it is regenerated or otherwise recovered, it returns with the rune still upon it.
RUNEFORGED WEAPONS
During Thassilon's height, many of the empire's greatest soldiers, mercenaries, and assassins wielded weapons infused with magic that worked together to grant the wielder additional prowess over practitioners of an opposing school of sin magic. Such weapons were often banned in Thassilon, so wary were the runelords of their propagation, yet all seven kept champions and assassins armed with these runeforged weapons against their own enemies in secret.
MAGIC OF ENVY
The magic of Runelord Belimarius, the Queen of Edasseril, concerned itself with both the defense of one's own magic and the theft of others'. Queen Belimarius layered defensive rituals over all she possessed, her wealth, her servants, and her lands. She even defended because of paranoia against the intrigues and predations of her fellow runelords. From the plague ridden hands of her devoted apprentices, ever laboring beneath her poisonous Palace Miasmoria, came an endless stream of covetous, back biting magics, several of which lie hidden away in the ruins of northern Varisia and the Land of the Linnorm Kings to this day.
MAGIC OF GLUTTONY
With the profane immortality of the undead, Zutha, the lich-like runelord of gluttony, spent years of his centuries-long rule at work in the Flesh Pits beneath Xin-Gastash. Endlessly attempting to satisfy his eternal hunger while at the same time imagining new debaucheries to indulge in, his efforts resulted in the production of a vast collection of foul arcana and unspeakable experiments into the workings of necromantic magic.
MAGIC OF GREED
Shrewd and imperious Karzoug, the runelord of greed, faced dual wars during his rule; one against Bakrakhan's armies of wrath, and another against his own unquenchable greed. Seeking ever more of all that was worth having, Karzoug drove his apprentices and slave-wizards to manufacture endless quantities of magical equipment and new arcane innovations on merciless deadlines. Those servants who failed became fodder for his personal alchemical research on the transmutation of flesh into gold. Those who succeeded were merely saddled with higher and more impossible expectations. Although the runelord sacrificed countless loyal subjects, the rune-vaults of Shalast were forever teeming with scrolls and arcane equipment. Many of these lost vaults remain so filled even to this day, buried beneath the weight of fallen Thassilon.
MAGIC OF SLOTH
A master of rune magic and high priest of the rune goddess Lissala, Runelord Krune was both respected and feared-and not just by his people, but by the other six rulers of Thassilon as well. He took great satisfaction in his peers' fear, and displayed the strange and unique powers granted to him by the goddess whenever possible. Among such divine boons were a variety of unique rituals, spells, and magical items he claimed were gifts from Lissala, the formulas of their creation being imparted to him in visions as rewards for his extreme piety. Although the divine nature of his creations was often questioned behind closed doors, their deadly effectiveness was not.

MAGIC OF WRATH
Although possessed of wizardly might on par with the other runelords, Alaznist, ruler of Bakrakhan, cared little for the tedium of spell research and magical item construction. Her interests tended more toward the corruption, mutation, and empowerment of her vast legions, utilizing her cruel arcane genius to create the deadliest warriors in all of Thassilon. For all her efforts, though, the Runelord of wrath saw her minions as expendable pawns to be sacrificed at her whim. Thus, into the ranks of her armies she seeded potent magical creations that often proved as deadly to the user and his allies as to the enemies of Bakrakhan.
MAGIC OF LUST
Subtlety and control typified the magic of Sorshen, runelord of lust. Within her numerous palaces scattered throughout the lush paradise of Eurythnia, blind guards protected troves some of the most diverse arcane treasures in all of Thassilon. The magical hoards of Eurthania spoke less to the industry of the domain and more to the craft of its ruler, for these potent arcane riches were coaxed from the hands of every other domain in Thassilon. Sorshen excelled in exploiting the lusts of her opponents, and what she couldn’t gain as a gift utilizing seduction and political acumen, she took using her unique master of mind-magic.
MAGIC OF PRIDE
Xanderghul, Runelord of Pride, Satrap of Cyrusian, Master of the Unblinking Eye, unsubstantiated Heir of First King Xin, and self-proclaimed Rightful Emperor of Thassilon, claimed many titles, but few so true as Lord of Illusion. His lofty throne was Citadel Arete, which contradicting accounts record as either a mile-high tower or as a floating castle. From Arete Xanderghul veiled his domain in vast illusions, some to delight his fantastically wealthy populace, others to cull the passions of his slaves, but most to baffle the eyes of his opponents. Through out the entirety of his rule no force dared invade Cyrusian, as none ever truly knew the extent of the domain's forces. To maintain this deceptive veil, the Runelord of Pride employed a variety of potent magical items, including arcana said to have been stolen from Heaven itself.