Questions about Shaco and his clone.

I have a few questions about Shaco I was hoping you guys could clear up for me. The wiki and the forums can't seem to agree on what is what when it comes to him.

1. What items does Shaco's clone benefit from? I was playing a game earlier and it was procing Bloodrazors but not Wits end. can it proc anything else? like malady, sword of the divine, wriggles, or whatever?

2. in the same vein as the last question, which defensive items benefit shaco's clone? ive been told that Banshee's viel does but GA does not.. but what about Sunfire Cloak and Aura items?

3. is infinity edge good on shaco? how exactly does it work with his Q? i know the Q does a very low amount of bonus % damage at lower ranks but would infinity edge over ride it or increase its damage at max rank?

4. Does my clone get any sort of attack speed like I have? it seems like it attacks faster but the tool tip doesn't clarify..