Renegade Doppelganger has some nice combo cards:...Phyrexian Dreadnought...Flash...
The Basic rulebook, read it! A lot of basic questions are answered there!
How to autocard :
Type [c]Black Lotus[/c] to get Black Lotus.
Type [c=Black Lotus]The Overpowered One[/c] to get The Overpowered One.
PS: CB's idea above looks great, but a black deck that empties its own hand always makes me thing of Dark Suspicions, one of those tantalizingly promising rares that I've never actually built around but always wanted to.
Renegade Doppelganger+Phyrexian DreadnoughtI think it works like this: Doppleganger in play. Pay to cast the Dreadnought. When it comes into play, trigger the Doppleganger. Let it resolve to become a copy of the Dreadnought. Let the original Dreadnought trigger resolve sacrificing your new 12/12 Doppleganger to the Dreadnought. Now you have a permanent Dreadnought ready to go.
Wait, how can you use the sacrifice option of Dreamstone Hedron with Skill Borrower? Part of its cost is "sacrifice Dreamstone Hedron", not "sacrifice this permanent". Am I missing something here?