Celestian

Celestian was a deity from the world of Oerth  revered by planewalkers and wildspace wanderers. He was one of the major powers worshiped on the Rock of Bral.

Description
Celestian was portrayed as a black-skinned man who traveled the skies.

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Personality
Grave and quiet, Emmantiensien was a god of few words; when he spoke, however, everyone listed, for his wisdom was great. He was chaotic and good in his moral outlook.

Abilities
Emmantiensien's avatars could speak with animals and plants and could animate trees, as could all treants. He could control flames at will and cause plants to grow. He had the power to summon elder treants to his side and also to bless one of them with enhanced spellcasting powers by interlocking branches.

The connection of his roots to the ancient crystal allowed him to project a prismatic spray of magical power or create a phantasmical illusion that could destroy foes every several days. It also granted him some ancient powers that not even Titania possessed in her arsenal.

Emmantiensien was immune to all enchantments and charms, illusions, and paralyzation. However, he was weak against fire.

Finally, Emmantiensien had access to druidic magics as well as spells of elemental earth and water typically used by wizards.

Activities
Connected as he was to the roots of his realm, the sage of the Seelie Court could hear murmurings of entities living deep beneath the surface of many worlds. He also listened to the wind and to animals resting in the branches of his avatars. He spoke with faeries and listened to the songs of the elves. Thus, he gathered a great deal of information useful to the Court, and he never forgot anything that he heard—though it might take him a long time to recall something from deep in his memory.

Emmantiensien sent his avatars to protect ancient forests, where they would watch, appearing dormant but in fact ever-vigilant. They might even lead treants in battle against those who would seek to annihilate sylvan lands.

His avatars would attend the centurial meetings of the elder treants.

Worshipers
Emmantiensien was revered by chaotic good treants as a god of their people and of trees and deep, hidden magic. He was seen as an eternal being of wisdom, similar to how the scaled ones saw the World Serpent. His holy symbol was two acorns.

He was not directly worshiped in most places in the Realms; however, some elves of Faerûn offered prayers to him along with their worship of the Seldarine, as they also did to the other deities of the fey people.

Divine Realm
The Treant-King shared the divine realm of the other members of the Seelie Court, which had no permanent location but instead wandered from plane to plane, from the Beastlands to Arborea to Ysgard.

Relationships
Besides being a member of the Outer Court of the Seelie, Emmantiensien was strongly allied with the elven nature god Rillifane Rallathil. Emmantiensien, Rillifane, and Silvanus often carried on long and deep conversations together. -->

History
On the world of Toril, Celestian played a significant role in the Time of Troubles by agreeing to transport (a now mortal) Waukeen from Toril to the Astral Plane so that Ao would not discover her leaving. (Her plan was to make her way from there back to the Outlands, but because of the machinations of Graz'zt, she was instead trapped in the Abyss for many years.) Celestian had owed her a favor, which was why he agreed to her plan, but he refused to also transport her ally Lliira, whom he did not know.