League of Legends XXXII: Cupcakes and Kittens and Squirrels. Oh my!

[SlyGuyMcFly]

So I picked up TF on a whim, and have been playing the hell out of him:

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So yeah. Haven't done so embarrassingly poorly with a new champion in along, long time. Very tricky, but very fun as well. And I think I'm making progress, particularly with his W, which is hella weird. So question: How does the game decide which is the first card in PAC? Because often it's the card I just tossed, other times it's one of the other two and I'm mighty confused on the matter.

Also, general tips? I'm building him with boots start, couple of Doran's into Sheen, into Hat, into Lichbane. Yes? No? Lose the Dorans and rush Sheen perhaps?

Edit: Oh, and laning tips in particular would helpful. Matchups to be wary of, that sorta thing.