Talk:Kog'Maw/@comment-68.54.72.252-20110703211949/@comment-84.245.149.37-20110705151831

Just check the sitebox: Max Health to Damage Ratio: 2 / 3 / 4 / 5 / 6% (+1% per 100 ability power)

So if you had 2000 max health it'll do 6%=120 magic damage when completly leveled in addition to his normal attack for 6 seconds. For each 100AP he gets another 1% (+20 damage in this example).