There's actually a LOT of graveyard hate in Standard now, so there's a great chance you just are never going to find anything that's worth stealing, on top of the 'cost' of having clues and sacrificing them somehow
Its own exhaust ability probably wont do much, but its still quite powerful for a 2-drop
When you do, put a +1/+1 counter on each creature you control.
Then you roll a d6 and if you rolled its mana value you sacrifice it and deal damage equal to its mana value to one target
Ive already made it relatively clear that both work pretty great with knights, so being able to play them from the top of your library directly attached onto your knights is definitely great
Saruman's always been about forbidden knowledge, so delving deep into your opponent's decks as well as your own feels perfectly natural for our lord of the white council