You have access to one additional domain of spells.
Prerequisites: Wis 21, able to cast 9th-level divine spells.
Benefit: 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.
Special: You can gain this feat multiple times. Each time you take the feat, it applies to a different domain.
Source: Complete Divine, page 89.