Talk:Ability power/@comment-75.55.221.100-20110521020511/@comment-569195-20110621235655

Hmm interesting. the 30% from Rabadon's only applies once so does an AA or additional Rabadon's give more AP?

Each AA gives 400 mana + a one time bonus of 1000 mana for a total of 3000mana and an average hero base mana of 1011. So each AA gives 45ap + 3% of 4011 mana for a total of 165 AP, 10 more than Rabadon's.  It will actually be slightly higher as most AP casters have above the average base mana. Janna is the biggest at 1454 giving 179 AP per staff.

Theoretically if we take average mana then 5AA plus Rabadon's. gives (165*5 + 155)*1.3 = 1274 AP. If you remove an AA and replace it with a soulstealer you get (153*4 + 180 + 155)*1.3 = 1231 AP. The loss of the 400 mana offsets the extra AP from the soul stealer.