Okay, let me say this right now, THIS IS THE WORST COMBO EVER.
It is very, very problematic. I played this on the Beta, against a bot. But, if both players go for this, pretty much, the game will never go anywhere until one player decides to resign. This is the first time that such a combo exists. Someone mentioned earlier about a board that should be banned with Scavenger/Stash, well, let me tell you, this is worse. If both players go this route, especially in a tournament, well, things will go nowhere, let's just say that.
I will go so far to say that this is worse than the KC/Masq pin because there is an actual way to win going down that path.