Passive: Berserker Rage
This is a very strong passive. You can clear the Jungle fast with lowlife or you can 1v1 good at the end of the fight. If you have like 30% HP it's like 1 1/2 Phantom Dancer (no Crit Chance).
This is one of the most op Skills in the Jungle.
If you throw it corectly you can pick it up and use it again in about 2 Seconds, this is the Skill that makes Olaf to one of the fastest Junglers ingame.
But this is one of the biggest problems on Olaf he only has this one slow as CC and it's a skillshot.
So you have to time it correctly
Just Q run to the enemy use E and Q again
W: Vicious Strikes
Nice in the Jungle for some extra Lifesteal. It works pretty good with the Wriggleys lifesteal. If you have the Wriggleys you can stay in the Jungle for years. Just use W and Wriggleys to get your HP back.
This skill also works pretty well with the passive.
E: Reckless Swing
OP OP OP
340 Truedmg at the End? Holy Sh***
This is sutch a good Spell. You can even 1v1 some extremly Tanky Champs like Malph or Shen
U can burst down the enemy AD/AP Carry in such a short time with the E-Q-Autoattack Combo.
This works so good with the Armorpenrunes. It'll allow you to deal tons of DMG. If your enemys don't buy Armor it almost feels like Truedmg.
No CC and extra Armor and MR.
It's so good in Teamfights. You can run in and nobody can stop you, the extra Armor and MR will help you to not get bursted down so fast