Gonna be honest, havent played a single game of ryze since the changes, they basically removed/changed 80% of his combos he could use which was the main reason i enjoyed playing him, relatively simple kit that when you had enough practice on him had a lot more options.
And yeah, realm warp is a waste of an ult, only time it was actually good outside of coordinated play was when you could R
to escape ganks, but apparently using 2x 2min cooldowns to get out of a sticky situation was "too op" for rito to let stay so they removed it.