Well, Riot has literally nerfed him for 3 if not more patches in a row. The only counter measures they've taken was recently by making his q reset as he uses his spells instead of having his spells hit THEN reset. There are many ways that Riot can buff Ryze, his early game is currently one of the worst early games of the game. His E moving from 2 seconds cooldown to 3.25 early is TOO BAD, you can't expect to even fight an enemy back, the only way you can fight is by poking along with your E on the wave with Q which costs way too much mana over time when you don't currently have tear. If anything Ryze is simply in desperate needs of a buff, though, knowing how Riot has difficulty buffing him, it will probably take time, since when they last reworked him, he was a little too strong though not strong enough to receive such nerfs.