I played on the Riot PBE Playtest Stream. Here are my thoughts.

So Riot just did a playtest stream for the new Yorick. I was in the last two of the 3 games as Swain and Kha'zix. https://www.twitch.tv/leagueoflegends/v/85322017

Here are my thoughts for playing with/against the people who made him.

1. Sheen is core. The synergy with his Q is amazing for quickly taking out turrets and is essentially the same premise of why you buy it for Nasus's Q.

2. He is definitely a mid game split pusher. Early game he is good at rushing down first tower, but after he get's his ult and an item or two he can efficiently push two lanes at once, possibly three with a zzrot. Late game he falls off just a little bit because enemies by that point have powerful aoe for his minions and can focus him down as a team.

3. He has great synergy for top lane ganks. His W, if it lands, will almost always force a flash if the enemy doesn't have a dash, and he is a direct counter to Gangplank and will most likely be seen as a counter to him in high play.

4. Grasp is great. He already gets healing off of Q, paired with Grasp he can have very good sustain in lane and can usually wait it out till the mid game split spike.

5. His AD ratio on Q is too high and will almost certainly be tweaked after release.

#If you have any questions about interactions with his abilities or questions that would come up on stream, I can give you a quick answer from all the Q&A they did.