Lord Zack's Greyhawk
Rao is the Flan god of Peace, Reason, and Serenity. His holy symbol is a heart-shaped mask with a calm expression, or a simple white heart crafted of metal or wood. He is recognized as the supreme deity in the Church of Veluna. St Cuthbert is a close ally and servant and was a worshiper of Rao in his mortal life.