Board Thread:Wiki discussions and announcements/@comment-26053782-20150129202217/@comment-24055932-20150225164632

Just gave it a test run for Xerath. Runes: 3*4.95 ; Masteries: 6 + 0.89*LEVEL ;

Items: Dorans Ring, Mejais with 6 stacks, Chalice, Rabadons = 15+20+6*5+60+120 = 245

All together at level 15 (still Raw AP): 279.2

Amplification factors: Rabadons, Archmage, Dragon (*1) ==> 1.05, 1.06, 1.3

279.2 * 1.3*1.06*1.05/(1-(1.3*1.05-1)*0.06) = 413.02

Actual (ingame) AP was 440. Then again it was from a Youtube-Channel, so as I said, I don't 100% trust it ^^