Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
JUNGLE OLAF OP
most people go with olaf as high hp and some dps but for me i take olaf as full dmg with enought life steal. for a jungle olaf u buy the life steal item with vicious strick and dont go jungle till u got the health posion so u w8 till minons spawn buy the life steal item and ghost to mana buff so u dont lose time on leveling, as for the bild and life steal olaf with epic dmg and epiclife steal=undieable