Olaf's ability needs a time limit
The fact that once it turns on it's on til the round ends is broke AF. Same thing every time. An Olaf with a Phantom Dancer hits his skill, and he's unkillable. I've personally seen an Olaf solo 4 3-star champs. It's bull mess.
can kill half the enemy team, and it's not so hard to make if you are lucky and get one Olaf early.