User blog comment:MickB/Khrax, the Archaic Overlord/@comment-8311156-20131104211205/@comment-24087642-20131105013503

It's still a little o.p. I would recommend nerfing it to increasing his A.P. by 1% for each 1.5% of his missing health.

Take for example, olaf. Olaf is underpowered right now. But his passive isn't because they aren't changing it in an upcoming rework.

Olaf's attack speed increases by 1% for every  1% of his missing health. This might seem the same as Khrax's but it's not for two reasons:

1) Attack speed is more of a multiplier than a main stat, and has a cap.

2)Attack speed is melee, so olaf usually can't stick around to use it. Every one of Khrax's abilities are ranged.

At half health, with the nerf I suggested, khrax would get 133% A.P. Not overpowered, but enough to change the tide of the battle, because Khrax will still fight at half health.