Lunomancy

Lunomancers are rare, they work in the shadows, and use the moon to cast spells. They learn from the gods, who also gained their power through moon magic. There power influences all, and their magic in un-natural. 

Lunomacy Savant

Beginning when you select this school at 2nd level, the gold and time you must spend to copy all spells into your spellbook is halved.

Arcane Chance

Once per long rest, you may roll a DC 10 Intelligence check. If you succeed, you may cast one spell from your spellbook up to 6th level without expending a spell slot.

Expert Lunomancy

Beginning at 6th level, casting spells comes so easily to you that it expends only a fraction of your spellcasting efforts. When you cast a divination spell of 2nd level or higher using a spell slot, you may roll a d6 and regain a spell slot of the spell level rolled.

You may only use Expert Lunomancy once per long rest. 

Lunar Casting

Starting at 10th level, .You begin to channel the arcane power of the moon to cast your spells. Once per long rest, you may cast an amount of spells without expending a spell slot equal to your Intelligence modifier.

 

Greater Arcane Chance

Starting at 14th level, when you use the Arcane Chance feature, you can cast an amount of spells without expending a spell slot equal to your proficiency bonus. Also, the check DC for Arcane Chance is increased to your wizard level + your intelligence modifier (minimum of 1)