You have probably guessed already how strong House Dimir is in this set. The card above defines the control aspect of the blue-black pair by siphoning three cards out of your opponent's library, one of which you can even play if needed be.
If you've ever played Gonti, the Lord of Luxury, then you know how convenient it can be to play additional cards from your opponent's deck. And it doesn't matter if Thief of Sanity survives or dies, you can cast the exiled card anyway.
