Marduk

Marduk, also known as Marduk the Justice Bringer, was an aspect of Bahamut, worshipped in Unther for a time. Marduk battled Tiamat on many occasions leading up to the Battle of the Gods but the conflicts were a stalemate until this point. At the Battle of the Gods in -1071 DR, Marduk killed Tiamat while she was attacking Gilgeam, but Marduk sacrificed himself in the act. Marduk's church disappeared after this.