late to the party here but ... domains derived from FR sources below are a mixture of 2e and 3e
i have a hard time just randomly taking away and/or giving new domains to deities without a canon reference as to why their domains have changed (WotC obviously doesn't have this concern) ... so I simply make available the domains that have been listed for a deity in canon in the past unless there is a drastic change in their outlook
that being said, some of Tiamat's domains simply don't make sense so i'd lean to the 3e ones listed in the above post while keeping greed, dragons, scalykind
Tiamat morphed from a draconic deity in 1e to a human deity in 2e and 3e
TIAMAT –
Manifestations: The Chromatic Dragon, The Dragon Queen, The Dark Lady, The Nemesis of the Gods, The Undying Queen
(sources : FR Faiths and Pantheons, FR Powers and Pantheons, FR Campaign Setting, FR9 The Bloodstone Lands, FR10 The Old Empires, H4 module The Throne of Bloodstone)
Symbol: Five-headed dragon
Alignment: LE
Allies: none
Foes: Ilmater, Bane
Domains: destruction, hatred, trickery, evil, law, scalykind, tyranny, chromatic dragons, greed, necromancy, protection, animal, combat, divination, healing, time, wards, weather, guardian, charm, summoning
Worshippers: Chromatic dragons, Evil Dragons, Cult of the Dragon, fighters, sorcerers, wizards, thieves, assassins, blackguards, clerics (many clerics multiclass)
Cleric Alignments: LE, LN, NE
Favored weapon: dragon head (heavy pick)
Other weapons: all bludgeoning, longsword
Armor: any
Bonus skill: can speak draconic
Affiliated orders: Serpent Guard, Knights of the Talon, Wyrmkeepers, The Pentagon