Berserker Rage - For each 1% of health missing, Olaf's attack speed is increased by 1%.
Explanation: Very amazing passive . If you fight with somebody and you both are 10%HP and you both have all your Skills on Cooldown than you WILL win and kill him unless your opponent is a Graves with 450 AD . Its also great for jungling because you get an so amazing attackspeed buff and together with your W you can jungle almost endless.
Undertow - Olaf throws an axe into the ground at a target location, dealing damage to units it passes through and slowing their movement speed. If Olaf picks up the axe, the ability's cooldown is reduced by 4.5 seconds.
Olaf throws an axe to a target location, dealing 80/125/170/215/260 (+1.0) physical damage to units it passes through and slowing them by 24/28/32/36/40% for 2.5 seconds.
If Olaf picks up the axe, the ability's cooldown is reduced by 4.5 seconds.
Explanation: This is Olaf only CC . But keep in mind that it does'nt stop at the first target it hits like Mundos Q , it penetrates them so this is a multi target slow .
Vicious Strikes - Olaf's attack damage is increased, based on his health, and he gains massive lifesteal and spell vamp.
For 6 seconds, Olaf's attack damage is increased by 7/14/21/28/35 (+0.01 [1% of maximum Health]) and he gains 9/12/15/18/21% lifesteal and spell vamp.
Explanation: This is what makes Olaf to a good jungler. It gives him the sustain and the Damage he need in Season 3 Jungle.
Reckless Swing - Olaf attacks with such force that it deals true damage to his target and himself.
Olaf ferociously swings his axes, dealing 100/160/220/280/340 true damage to his target.
Costs 40/64/88/112/136 Health
Explanation: If solo top Olaf max this first . Especially in the early and mid game its a *****ing high burst Damage .
Ragnarok - Olaf is immune to disables and takes reduced damage.
Active: Removes all disables from Olaf and for the next 6 seconds he is immune to disables and has +30/45/60 Armor and Magic Resist.
Passive: Olaf has +10/20/30 Armor Penetration.
Explanation: Great for running away or just ignore all CC like a boss . This skill makes it able to run through entire teams and kill their Carry and just be unstopable . In the truest sense of the word .