Vhostym

Vhostym, also called the Sojourner, was an ancient and extremely powerful githvyrik who possessed both arcane and psionic powers to call upon. As of 1370 DR, he had lived for over 10,000 years, bolstering his lifespan through the use of powerful magics. It was around this time that he came in conflict with Erevis Cale while trying to achieve his goal of creating the "Crown of Flame".

Personality
Vhostym worshiped no god or goddess, as he saw the gods as nothing compared to the utter randomness and enormity of the universe. The only order and predictability that the universe had to offer him was its perfect mathematics, which he used to bolster his spellcraft, making him near-unrivaled by any but the gods themselves. He resolved through his increase in power that the only law in the universe was that those who were weak should suffer the will of the powerful, and that morality, whether good or evil, was a fiction created by sentient beings to bring purpose to meaninglessness.

However, Vhostym took no pleasure from the suffering of others, but not hesitating to wipe out civilizations and worlds for his whims. He neither loved nor hated any being in a universe so unpredictable.

Early Life
As a child, Vhostym stood on the surface of Toril only once beside his father. He stood under the "Crown of Flame" in his own corporeal body, and since then tried unsuccessfully to eliminate his skin's sensitivity to the sun. It was from this memory that he got the idea to harness the crown for his own ends.

Vhostym went on in his youth to build and use his strength for his own desires, destroying entire worlds, slaughtering flights of dragons and thousands, perhaps millions of creatures.

Disease and a Dream
Vhostym contracted a disease that caused his body to decay. Through his magic, he was able to slow the process but remained unable to prevent it from slowly consuming him over a span of a few hundred years. Seeing his inevitable demise, he began to conceive of a plot where he could again walk on the surface in the daytime in his own physical body, without succumbing to the fatal sun sensitivity of his race that had been enhanced by his diseased condition. He started calling himself the Sojourner and began preparations to cast one of the greatest spells Toril would ever see.

Slaadi
Vhostym invaded the plane of Limbo and managed to steal a clutch of slaadi eggs, taking them to his own pocket plane. Here he infused the eggs with arcane energy, making them unique from the rest of their kind. He raised four green slaadi: Elura, Serrin, Dolgan, and Azriim. He promised them transformation to the more powerful gray slaad form in exchange for doing his bidding, so they became his willing servants in his plan to summon the Crown of Flame. After a series of clashes with Erevis Cale, the First Chosen of Mask; Drasek Riven, the Second Chosen of Mask; Jak Fleet, the cleric thief; and the psionic tiefling Magadon, the slaadi succeeded in gaining enough power for Vhostym to perform his spell. They obtained the Weave Tap from the Fane of Shadows, a temple dedicated to the goddess Shar, and Vhostym nurtured the seedling until it grew into a great plant by feeding it the substance of celestials and fiends. The slaadi also found and tapped into two ancient Netherese mantles, which were similar to the mythallar created by the elves. These mantles were found in the underwater city of Sakkors, which was near Selgaunt in Sembia, and in the underground cavern city known as Skullport. This arcane energy went into the Weave Tap, and Vhostym was able to power up his spell. He rewarded the slaadi not only with transformation into gray slaadi, but went one step further and transformed them into death slaadi. However, Erevis Cale and his companions were able to kill all of the slaadi except for Azriim, who escaped the final battle and whose whereabouts remained unknown.

Crown of Flame
Vhostym completed his final and greatest spell, knowing he had only a matter of days before the disease ended his life. The spell took hold of one of the many asteroids orbiting the moon known as Selûne's Tears. He used its bulk to shield the rays of the sun from the wayrock, where he had placed a stolen temple of Cyric as the storage facility for his arcane power. Vhostym enjoyed his final moments on Toril's surface under his created eclipse (the Crown of Flame) and, knowing he was to die any minute, he put up no resistance when Erevis Cale crushed his body and destroyed him. With his death, the spell lost its hold on Selûne's Tear and caused it to crash into Toril's atmosphere. At that point, it shattered and fell in a rain of meteor fragments known as the Rain of Fire.

Background
In a non-canon post at Candlekeep, author Paul S. Kemp gave details about the githvyrik, considering them to be a member of a small but powerful offshoot of the gith sundering.

Appearances

 * Novels
 * Dawn of Night
 * Midnight's Mask