Talk:Cassiopeia/@comment-24851452-20140828181650/@comment-7709681-20140828194649

Lets suppose you have the innate passive fully stacked, and possess both Rabadon's and the Archmage mastery.

In such case, you'll need 563.54 AP to have 1k AP, knowing that you already possess 120 AP due to Rabadons on this example, you'll need 463.54 AP to have 1k AP.