Conundrum Sphinx is amazing with SDT...
Conundrum Sphinx 2UU
Creature - Sphinx
Flying
Whenever Conundrum Sphinx attacks, each player names a card. Then each player reveals the top card of his or her library. If the card a player revealed is the card he or she named, that player puts that card into his or her hand. If it's not, that player puts it on the bottom of his or her library.
4/4
Beats for 4 evasively at 4cc, and draws you cards you already know whats on top of your library when you have top out.

