Clerics

Classes that rely on a connection to the divine and the living energy that fuels it require a bit of planning in Asgard, as unlike most D&D Campaigns, Asgard has no true gods. Part of this is due to the Realm being sealed.
Instead, clerics draw their power from one of the elemental planes. Some clerics treat their favored elemental power akin to worship, while others describe their relationship in terms of power exchanged for fealty.
A cleric of a particular element must take Air, Earth, Fire, or Water as one his domains, and choose any non-elemental domain as his other domain.
Elemental Clerics can be of any alignment.