Bonus Domain( Epic Level Handbook, p. 51)
You have access to one additional domain of spells.
WIS 21, ability to cast 9th-level divine spells,
Choose an additional domain from your deity's domain list. You now have access to that domain's spells and granted powers as normal for your domain spells.
You can gain this feat multiple times. Each time you take the feat, it applies to a different domain.