This is kinda a slow combo, but using Secret Passage on Great Phantom will allow you to look at your opponents hand with a direct attack.
Can be used if you are reading Kalut or Honest. Useful cuz the only downside to him is keeping him alive and spending the cards to let him attack more than once. Shootings STar Trice or whatever thingy
I know this is probably an old ass combo, but forcing your opponent to dump their Honest/Kalut unused is teh awesome.