A lot of people here are talking about the ceiling of this card, and what they might do in the better situations where this card is an option. I think I wouldn't want to see this card very often in most decks. 1B + 1 mana that gets affected by artifact removal, Null Rod, Ouphe, etc., and gives a Demonic Tutor (at instant speed during one's turn) for 1 colorless mana to your opponent the turn after you activate it is not a valuable topdeck unless you have a great hand and/or board. Usually I want to have a card that is good when the game isn't going well for me, and good when the game is going well for me. I think the card is cool, but I don't imagine it would be as great as some seem to make it out to be. I would prefer to be wrong here.