Celestial / Cosmic
The Half-Elf demigod child of Zeus, Dionysus, ascends to Godhood, claiming the domain of Festivity. Dionysus spent their life hosting grand and ecstatic parties all over Exorsia and the Planes, commonly in honour of the Gods.
The Gods adored Dionysus so much that when they died they were ascended to godhood, so that the party would never end.