User blog comment:TakaHann/Gravitatus, the Mage of Vectors/@comment-7782501-20130902060341

Maximum damage at level 18: 800(not counting W's AA boost) + 35% of missing health  (+50% AD) (+166% AP) (+misc% of missing health per 60 AP)

Assuming that you have 540 AP at Level 18... that would be 800 + 52.25(AD) + 896.4(AP) + 44% of missing health aka 1749(rounded up) + 44% missing health. damage dealt to a single target.

Malzahar with the same amount of AP would deal 67% Max hp damage + 1170 + 1566(from AP) damage. who's OP now?