Talk:Olaf/@comment-72.66.118.56-20130211224417/@comment-91.22.84.245-20130212010443

Q: slow now fades over the duration instead of applying the full debuff for 2.5s

W: CD increased from 12 to 16

R: passive armour pen now limited to the active duration

You can also read such changes in the patch history on the Background page.