Post-Vlad Rework Builds. Opinions?
will be core. Rylai's is practically necessary to function still, while Deathcap pushes his Q, both healing and damage, farther than any other single item. This is important because AP is horribly slot-inefficient on him now. His ratios were gutted with this update. Spirit Visage provides the functions of a defensive/offensive/sustain buy now. Its too good not to get, unlike before when abyssal was far better on him.
will be the situational items. Both of the armor/hp options provide better maneuverability in fights, so long as you don't auto attack late game with DMP. Warmog's allows you to push without killing yourself, as well as do a better job at staying healthy as a front-liner (which he is much more of now); also 10% CDR now. Do note that HP has better damage scaling on him now than AP. Again, AP is horribly inefficient to dedicate yourself towards now.
will be extremely situational buys. They are not efficient purchases on him now, but do have situations that they perform very strongly in.
Note that Zhonya's is no longer core. The AP dropping significantly, not offering HP that he needs now, and the active not meshing with his new kit's pattern all work against it. Plus significantly longer CD on the active.
Void is no longer core either, due to AP being so inefficient on him now. If enemies are buying MR, yes, it becomes a very good damage item. However, often times, the survivability+damage via a tank item will do more for you. It won't be a 3rd slot damage item anymore at the very least. Pretty much going to be used when everyone is stacking MR as opposed to all of the time.
A 10-30% CDR rune page will be used on him, depending on the enemy team. Likely 10-20% most of the time, but I'd rather stick with Swifties, Mercs, Tabi, Sorc, etc so 30% for me. Swifties+Stormraider's Surge OP.