They're three goddesses that make up one - a concept that exists only in the country of Rashemen, where they're known as the Triune Goddess.
From left to right: Mielikki, goddess of the hunt and the wilderness, Chauntea, goddess of grain and the earth and Mystra, goddess of magic and the Lady of Mysteries. In Rashemen they are known as Khelliara (Mielikki), Bhalla (Chauntea) and The Hidden One (Mystra). They belong to Wizards of the Coast and Hasbro. Actually is a RPG game.
Me encanta Mystra!
..... eeehhh o¬o ooohhh so purdy