Wait why does Olaf use Courage of the Colossus?

Probably olaf mains brain cells mutated into pure muscles, and discarded the purpose to think lol

Because Death is the best CC.

Because the site isn't updated yet, so it considers it as the old SOTA, for anyone who's wondering he goes fervor.

At a guess:

1. Possible bug with the keystone means he can activate it
2. People don't read patch notes.

I find [2] far more likely, personally.

Because true damage counts as hard cc duhh