For each 1% of health missing, Olaf's attack speed is increased by 1%.
Undertow
Olaf throws an axe to a target location, dealing 50/90/130/170/210 (+) 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 6 seconds.
Level
1
2
3
4
5
Mana
55
60
65
70
75
Range
1000
1000
1000
1000
1000
Vicious Strikes
For 6 seconds, Olaf's attack damage is increased by 7/14/21/28/35 (+ [1% of maximum Health]) and he gains 9/12/15/18/21% lifesteal and spell vamp.
Level
1
2
3
4
5
Mana
40
45
50
55
60
Range
700
700
700
700
700
Reckless Swing
Olaf deals 100/160/220/280/340 true damage to his target and inflicts 40/64/88/112/136 true damage to himself.
Level
1
2
3
4
5
Mana
50
50
50
50
50
Range
325
325
325
325
325
Ragnarok
Active: For 5/6.5/8 seconds, Olaf is immune to disables and reduces incoming damage by 20/30/40.
Passive: Olaf has 10/20/30 increased armor penetration.