Indefinite barring magical calamity or violence
All deities were either elevated to their positions by Ao (the overseer) or were approved by Ao to be worshiped in the Realms, in the case of interloper deities. No divine power may found a permanent faith and power base without his approval, though there are cases of short-term semi-divine beings who gather faith from worshipers without being deities. The most noted example of this is the various fiendish cults that have arisen. In at least two cases, the worship of these cults have provided enough power or filled a niche that was not otherwise filled, and the fiends in question have become deities in their own right. Both Gargauth and the minotaur deity Baphomet became deities building on the power foundation of a fiendish cult.
Worshipers are necessary for the continued existence and powers of a deity. The numbers and fervor of a god's worshipers determine in large part the power of the deity. Deities without worshipers or who are fading in popularity fade in power, and in extreme cases can even die from neglect.
Types of deityEdit
The native deities of Faerûn are those whose worship arose during the creation of Abeir-Toril, or shortly after, and who are only worshiped there. In general, the native deities are worshiped by the native races of Abeir-Toril, those that arose from the primordial chaos at Ao's creation of realmspace. Humans, dragons, lizardfolk, nagas, yuan-ti, locathah, doppelgangers, and the fey races are the most common worshipers of native deities.
Humans, elves, and other creatures have made their way onto the face of Abeir-Toril over the millennia. Many of them have brought their own divine patrons with them. Those gods who serve portfolios where no native Faerûnian power exists seem to almost automatically achieve divine status. Those whose portfolios conflict with an existing deity are either absorbed into the existing deity or may contest for the power of their worshipers. In the last case, it may be a "winner take all" type of event, or the loser may accept a smaller portfolio and a subservient position within the pantheon.
The gods of the dwarves, elves, illithids, halflings, and gnomes followed their respective peoples into Abeir-Toril. Later, the gods of the orcs and other goblinoid races did the same, following and supporting their worshipers.
Deities are not immortal and can die. Conflict with other deities, conflict with great mortal heroes, and neglect are the most common causes of a divine demise, though it is also possible for a god to lapse into apathy, drift into sleep on the astral plane, and eventually perish. Ulutiu is a prime example of this last possibility.
Though a deity may die, at least a part of them will always remain. There have been instances of worshipers of these deities tapping into these remnants to wield divine magic. Dead deities also have the potential to be resurrected if they can maintain some kind of physical or metaphysical presence and a significant base of worshipers.
A pantheon is a grouping of deities, often with overlapping worshipers. All of them are based on races or cultures, usually with strong geographic ties. Ao ensures that no two deities in the same pantheon can claim the same portfolio.
The Faerûnian pantheon is the primary human pantheon that is venerated across Faerûn. It is composed primarily of native deities, and is the result of millennia of cultural blending of various other pantheons to bring out a moderately unified whole. There are remnants of other human pantheons that have been combined into a single pantheon as their source cultures have blended, merged, and conquered one another.
The Talfiric pantheon was worshiped in contemporary of Netheril, and is the source of at least Garagos, who lost in the clash with Tempus and was reduced to demigod status.  The Netherese pantheon itself claimed the worship of the lower and middle classes of Netheril, and the survivors of the Netherese pantheon are perhaps the most numerous of the survivors of the gods of history, boasting Jannath (now known as Chauntea), Targus (now known as Garagos), Mystryl (whose power lived on in Mystra), Selûne, Shar, Kozah (who became known as Talos), and Tyche (who split during the Dawn Cataclysm and became Tymora and Beshaba).
The Jhaamdathan pantheon was worshiped in what is now the Vilhon Reach and the Dragon Coast. The Coramshite pantheon was based in what is now Calimshan. The Untheric pantheon once maintained a separate status similar to the Mulhorandi pantheon (covering Unther, Chessenta, and the Raurin desert), but collapsed during the Time of Troubles, and the survivors became a part of the main Faerûnian pantheon. Only two of the old Untheric deities have survived, Assuran (now called Hoar), and Tiamat; the others died during or before the Time of Troubles. 
The Mulhorandi pantheon were a group of interloper deities that followed their people when the wizards of the ancient Imaskari Empire brought legions of slaves through gates from another world. At first, the gods could not reach their worshipers directly, and were compelled to create manifestations to contain a portion of their divine power.
Those manifestations walked among their mortal followers, guiding, protecting, or dominating according to their natures until the Time of Troubles. After that perilous time, the ancient barriers that had separated them from their true divine essences were dissolved, and the Mulhorandi pantheon left their manifestations behind as powerful mortal servants and took up their natural divine positions.
The worship of the Mulhorandi pantheon at one time covered Mulhorand, Thay, Semphar, and what is now the Raurin desert. During the Age of Upheaval they began struggling to hold onto Mulhorand itself, with their worship waning in Thay and Semphar. They tried striving to convert the followers of the collapsed Untheric pantheon but couldn't survive the Spellplague, disappearing without a trace when the divine realms were forced to rearrange themselves.
The people of the Chultan peninsula tended to worship Ubtao, a primordial, though an aspect of Shar also held sway in the region and Cyric ruled over the nation of Samarach in the guise of their national god Leira who was killed during the Time of Troubles. Dwarves in the region almost universally worshipped Thard Harr.
The Drow worship the Dark Seldarine, deities that were cast out of the Seldarine after the failed invasion of Arvandor by the Anti-Seldarine. This original trio of gods was joined by four more as time passed. But with the events of the Time of Troubles and the War of the Spider Queen, Lolth subsumed the worship of the entire drow pantheon save for Ghaunadaur, who left the pantheon voluntarily.
The elves tend to worship the Seldarine. Gods that they brought with them when they originally came to Faerûn.
Gnomes worship the 'Lords of the Golden Hills', named after the divine realm that they inhabited until the Spellplague.
The halfling pantheon is known as 'Yondalla's Children'.
The Orcish tribes tend to worship Gruumsh, though they do have an entire pantheon of other gods such as Obould, all pale in comparison to the species' creator.
Other Monstrous FaithsEdit
Monsters don't tend to want to worship the deities of the more civilized races. A lot of monsters have their own gods whose portfolios consist of dominion over the creatures that worship them such as the kobold god, Kurtulmak. Some species however, have a whole pantheon of gods such as the Yuan-Ti pantheon (that has actually been secretly subsumed by Set).
Some fiends have gained enough mortal followers on Faerûn to achieve a divine portfolio. Most of these are demons from the abyss such as Yeenoghu and Baphomet, while devils such as Gargauth have also managed to do so. Asmodeus even ascended to join the Faerûnian pantheon when he stole the divinity of Azuth.
- ↑ Bruce R. Cordell, Ed Greenwood, Chris Sims (August 2008). Forgotten Realms Campaign Guide, p. 200. Wizards of the Coast. ISBN 978-0-7869-4924-3.
- ↑ 2.0 2.1 2.2 Eric L. Boyd, Erik Mona (May 2002). Faiths and Pantheons, p. 4-6. Wizards of the Coast. ISBN 0-7869-2759-3.
- ↑ 3.0 3.1 Julia Martin, Eric L. Boyd (March 1996). Faiths & Avatars, p. 2-16. TSR, Inc. ISBN 978-0786903849.
- ↑ 4.0 4.1 4.2 Eric L. Boyd (1997). Powers and Pantheons, p. 2-3. TSR, Inc. ISBN 0-7869-0657-X.
- ↑ 5.0 5.1 Eric L. Boyd, Erik Mona (May 2002). Faiths and Pantheons, p. 4. Wizards of the Coast. ISBN 0-7869-2759-3.
- ↑ Eric L. Boyd, Erik Mona (May 2002). Faiths and Pantheons, p. 109. Wizards of the Coast. ISBN 0-7869-2759-3.
- ↑ Richard Baker, Ed Bonny, Travis Stout (February 2005). Lost Empires of Faerûn, p. 9. Wizards of the Coast. ISBN 0-7869-3654-1.
- ↑ Julia Martin, Eric L. Boyd (March 1996). Faiths & Avatars, p. 42-44. TSR, Inc. ISBN 978-0786903849.
- ↑ Eric L. Boyd, Erik Mona (May 2002). Faiths and Pantheons, p. 94-96. Wizards of the Coast. ISBN 0-7869-2759-3.
|Deities of the Era of Upheaval|
|Ao the Overgod|
|Greater Deities of Faerûn|
|Angharradh | Bane | Chauntea | Corellon Larethian | Cyric | Garl Glittergold | Gruumsh | Horus-Re | Kelemvor | Lathander | Moradin | Mystra | Oghma | Shar | Silvanus | Sune | Talos | Tempus | Tyr | Yondalla|
|Intermediate Deities of Faerûn|
|Abbathor | Arvoreen | Baervan Wildwanderer | Berronar Truesilver | Beshaba | Callarduran Smoothhands | Clangeddin Silverbeard | Cyrrollalee | Deep Duerra | Deep Sashelas | Dumathoin | Erevan Ilesere | Flandal Steelskin | Gond | Hanali Celanil | Helm | Ilmater | Isis | Labelas Enoreth | Laduguer | Lolth | Mask | Mielikki | Nephthys | Osiris | Rillifane Rallathil | Sehanine Moonbow | Segojan Earthcaller | Selûne | Set | Sharindlar | Sheela Peryroyl | Solonor Thelandira | Thoth | |Tymora | Umberlee | Urdlen | Vergadain|
|Deities of the Age of Humanity|
|Ao the Overgod|
|Major Deities of Faerûn|
|Angharradh | Bane | Bhaal | Chauntea | Corellon Larethian | Garl Glittergold | Gruumsh | Horus-Re | Lathander | Moradin | Myrkul | Mystra | Oghma | Shar | Silvanus | Sune | Talos | Tempus | Tyr | Yondalla|
|Other Deities of Faerûn|
|Abbathor | Arvoreen | Auril | Baervan Wildwanderer | Berronar Truesilver | Beshaba | Callarduran Smoothhands | Clangeddin Silverbeard | Cyrrollalee | Deep Duerra | Deep Sashelas | Dumathoin | Erevan Ilesere | Flandal Steelskin | Gond | Hanali Celanil | Helm | Ilmater | Isis | Labelas Enoreth | Laduguer | Lolth | Mask | Mielikki | Nephthys | Osiris | Rillifane Rallathil | Sehanine Moonbow | Segojan Earthcaller | Selûne | Set | Sharindlar | Sheela Peryroyl | Solonor Thelandira | Thoth | Tymora | Umberlee | Urdlen | Vergadain|