User blog comment:Willbachbakal/(Champion Rework) Olaf, the Berserker/@comment-24385282-20150706230440

Does Olaf need to pick up his axe to use Undertow again, or can he just use it twice in a row (assuming he already has 100 Fury and with a 1 - 0.6 second gap inbetween, of course)? With 400+ movement speed you could throw 4 axes on cooldown if you start with 100 Fury and pick up a minimum range axe within 1 second of it being thrown. Depending on Olaf's basic attack wind-up time, that'd put Undertow, after 4 consecutive on-cooldown uses, on a 2.5-1.5 second cooldown permanently. And you could potentially throw even more consecutive on-cooldown axes with Ragnarok active; you'd be able to throw one per second for your ultimate's duration and then still throw four more on cooldown.

What I find especially odd is that this, the extreme on-cooldown spam of the ability, is actually a nerf - he'll deal less damage with the ability at all stages of the game than current Olaf with Undertow and have the ability on a longer cooldown (current Olaf will likely get at least 10% CDR, and 6.3 - 4.5 < 2.5, and unlike this Olaf, the ability's cooldown would actually be lowered by CDR, while this one can't throw it more often than every ~2.5 seconds, regardless of CDR) with a shorter slow duration. The only buff is the slow amount, but the greater your slow is, the longer the ability's cooldown will be, because it's essentially only limited by the amount of time it takes you to walk to your axe.

Reckless Swing, however, seems insanely overpowered. If the stacks weren't refreshed on taking damage from Olaf, I think it'd be fine. But all you have to do is spam Reckless Swing (seeing as it now has a 1 second cooldown, no health cost, and you'll no longer be using Undertow except when chasing and not fast enough to catch your target) and profit. Reckless Swing, attack, Reckless Swing, attack. Don't have enough Fury? Attack a few more times then use it again then attack some more. Not only are you dealing True Damage with every use of the ability, but each time you use it, your attacks gain more and more damage, infinitely increasing. Need to use Undertow to catch up or Vicious Strike to get some health back? Well, luckily, the debuff on your target will be refreshed, despite the fact that you decided to stop using the ability that caused it.