Ryze's rework and his ultimate passive cdr.
WARNING: This is based off number alone since I sadly don't have a pbe account
Ryze rework is definitely a foot in the right direction for him. But does anybody find it weird his q isn't a static cool down and it is the cool down that his new passive decreases. So cool down decreases the power of his passive technically I wouldn't bother to care about this but his ult gives 30 percent cool down reduction. After doing some math his passive at max rank of his ult would decrease his passive to 2.8 seconds. A fix to this problem would making his q a static cool down like Udyr's stances or Sona's basic skills. making your passive not scale off your overload cool down, or if this was intentional getting a point in your ult at 6 then level it up when you reach 17 and 18. Tell me what you think in the comments about your opinions about this topic in the comments! Thank you for reading my board. 
Edit: Sorry if I forgot to include the other spells cool downs from the cool down reduction I will soon do a update of the math of comparison between each other.