Requirements
Spell casting: Ability to cast 4th level arcane spells.
Skills: Knowledge (Religion) 8 ranks, Spellcraft 8 ranks.
Feats: Enlarge Spell.
Patron: An arcane devotee must have a patron deity, and it must be the deity of which she is a devotee.

Class Skills
Alchemy (Int), Concentration (Con), Craft (Int), Knowledge (Int), Profession (Wis), Scry (Int), and Spellcraft (Int).
Skill Points at Each Level: 2 + Int modifier

Class Features
Weapon & Armor Proficiencies: Arcane devotees gain no proficiency in any weapon or armor.
Spells per Day: An arcane devotee's training focuses on arcane spells.  Thus, when a new arcane devotee level is gained, the character gains new spells as if she also gained a level in whatever spell casting class she belonged to before he added the prestige class.
Enlarge Spell: the arcane devotee may cast a spell as if it were prepared using the Enlarge Spell feat.  They can do this a number of times per day equal to 1 plus the arcane devotee's Cha bonus.  The spell does not need to be prepared in advance or take up higher spell slots.
Sacred Defence: Add this value to the arcane devotee's saving throws against divine spells.
Alignment Focus: At 2nd level, choose one component of the deity's alignment.  The arcane devotee now casts spells of that focus at +1 level.
Bonus Feat: Must be chosen from the following - Spell Focus, Greater Spell Focus, Spell Penetration, Greater Spell Penetration, Improved Counterspell, Magical Artisan, or Shadow Weave Magic.
Divine Shroud: Once per day, an arcane devotee, may surround themselves with a glowing divine power that grants spell resistance equal to 12 + the character casting level.  this is done as a free action and lasts 5 rounds plus the arcane devotee's Cha modifier.