Arcane Mastery; Divination [Fundamental]

Non-Epic creatures are unable to detect the effect of presence of spells (such as though spells like Detect Magic) you cast from the Divination school under any circumstances, and effects produced by spells you cast from the Divination school are invisible unless you choose otherwise.

Epic creatures attempting to detect the effects or presence of your spells from the Divination school must succeed on an Intelligence saving throw versus your spell save DC or fail to detect them. 

Additionally; five spells from the Divination school from any class like can be added to your spellbook. These spells are now wizard spells for you.