You shouldn't be upgrading the tear at all on Ryze until you have boots, Frozen Heart, Veil, and WotA. Even then, I'd seriously consider my 6th item slot before the AA upgrade. Manamune is full ****** even on SR, as the AP from AA has a better damage modifier vs towers than the AD from manamune.
As for Revive, it is an extremely situtional spell. You only get two uses per game on Dominion, so you'd better have a **** good plan for it. The movespeed boost was nerfed badly, so it has gone back to only being worthwhile on Champions with global ults or extremely defensive bottom laners. I basically only run it on Karthus, because the zombie time nerf screwed him badly and he also has a global.