Originally Posted by
mujadaddy
...buuut, let's go back to Blackmail. It's not terrible. It's strictly better than Thoughtseize when they only have 3 cards in-hand. I tend to cast discard early in the game, though, when they have 5 cards or so in hand... so Blackmail turns into a "brainstorm" where they can hide what they're most interested in keeping. For topdeck mode, I think Funeral Charm is better, as it can discard that card during their beginning step (instant speed)... but Blackmail is certainly a substitute for Duress or Thoughtseize if you can't get your hands on them.