Syndra vs Urgot Midlane Help?

So I'm just learning Syndra. Been practicing a lot on my aim and how specifically I combo.

Anyway, last game I played with a very toxic team against an urgot midlaner.

Urgot is insane. He has his passive, so every time you get hit, your damage is debuffed. His Q slows on top of that. His Grenade/Corrosive charge is fast, has no icon on the ground where its going to hit, and once hit by it causes pretty much secondary abilities on EVERYTHING. being slowed, and his Q then homes in, on top of slowing, and reducing damage.

I imagine Urgot uses his grenade, then sheilds and pokes, to reduce your damage, armor, and speed, then swaps with you with his ult to gain increased armor and magic resist. I would build armor, but that doesn't actually HELP. I imagine mobility to dodge his skill shots (but his Q homes in on targets, so that's difficult. All you can really do is dodge his grenade...)

So how do I play against an urgot? Especially as Syndra?

(Had a very good game against a Zed, that was satisfying. Denied him CS and got a kill after getting ganked early game, and managed to out play him despite that)