Beneath the grounds is a card I am interested in running, but I'm not quite sure how I want to work it into my rogue decks since it seems like it could be fairly slow to get value, although the potential value is really high.
I can imagine this card is great against combo decks which tend to cycle a lot. Patron warrior draws 4-5 cards? Well, there is a high chance that 1-2 of those cards gives the rogue some minions.
The obvious deck people think of with the card is mill. I personally still have little interest in running a rogue mill deck.
Also, I can't wait to see a rogue cast this twice and then the very next turn, ambush, draw card, ambush, draw card, ambush, draw card, ambush.... will be a great highlight reel.