Knight of the Blue Moon

"Observe the waxing and waning of the moon, and watch how the Weave ebbs and flows in response. 'Tis the Daughter of the Moonmaiden responding to the tug of her mother's bosom." - Xale of the Starry Glen
Knights of the Blue Moon are elite soldiers in the endless battle against the Mistress of the Night. Their tactics are strictly governed by the phase of the moon, for they are strongest when the moon is full and weakest when the moon is new. Drawing on Selûne's tidal influence over the Weave, they attack when the moon is waxing and their offensive powers grow strong, and they defend when the moon is waning and their defensive powers move to the fore.
Cleric/sorcerers and paladin/sorcerers make good Knights of the Blue Moon, for they combine a diverse array of spontaneously cast spells with the ability to channel the divine power of their deity. Cleric/bards and even ex-bard/paladins can also become Knights of the Blue Moon, although they are far less common.
Depending on your base spellcasting class or classes, you'll find that Wisdom or Charisma remains your most valuable ability score. If you choose to emphasize your capabilities as a sorcerer, you might wish to emphasize your Dexterity as well, allowing you to become a ranged combatant. Otherwise, the usual mix of Strength, Dexterity, and Constitution are likely to be as important to you as they are to all melee combatants.