How Olaf should be
Passive: Same
Resource: Olaf now uses rage for a resource instead of mana. Olaf generates 5 rage per attack. This increases to 7 when he is below 50% health and 10 when he is below 25% health.
Q: Bonus AD ratio increased by 10% Costs 15 rage.
W: Changed to a toggle with a 6 second CD. AS remains the same, LS increased to 13/16/19/22/25%. Costs 10 rage a second.
E: Inflicts a 99% slow for 0.1 second. When Olaf has more than 50 rage, Reckless swing roots his target for 0.2/0.4/0.6/0.8/1 second. Costs 25 rage.
R: Passive: Olaf receives 10/20/30 bonus Armor/MR and gains an additional 3/4/5 Armor/MR for 5 seconds for every enemy champ hit by his Q. The passive effects are not lost when the skill is activated. Active: Olaf removes all CC from himself and becomes immune to them for 6 seconds. He also gets full rage, 15/20/25% MS boost and 40/60/80 bonus AD during this time.
Boom, very small changes and suddenly viable champion.
