I think FoF does deserve a spot maindeck; 80% of the time there is no right split for the opponent to take, plus it feeds your threshold creatures.

What about Night's Whisper?

Message deleted. Only hit the 'sbumit' button once.

You want complicated infinite turns?
Try Isochron Scepter+worldly tutor+timesifter+draco+other ridiculously costed creatures.  
Stack the top card of library at end of each turn, make sure it's cost is at least, say, 10 and then let timesifter work its magic.

I think that's the worst one on the thread.