why did they rework ryze to a 42%

Because it turns out when you make a champion with huge windows of weakness and small windows of strength, people will abuse the crap out of the huge weakness.

he amazing, build archangle, lichbane, ludens echo and u be chasing enemies down with your 24 ult cdr that gives +80 movespeed. I sure there lots good builds out there, but I been seeing people using pretty bad builds for him, like 5x ROA.....