Does it have iconic cards from Magics past
So long as Kiki-Jiki, Mirror Breaker is on top of your library, the Snoop sees it and can use its copy ability to make a copy of itself, which can then create a copy of itself, etc
22.2 The Company is prepared to execute telephone bids on behalf of prospective Buyers who are not at the auction at no charge on the condition that the prospective Buyer acknowledges that taking instructions by telephone in the course of an auction has inherent risks (such as miscommunication, misunderstanding or other problems caused by a telecommunications fault or failure including a mobile telephone connection falling out)
(10/4/2019) If another effect puts these lands onto the battlefield tapped, they enter tapped, even if you control enough lands with the appropriate basic land type
Elesh Norn, Grand Cenobite makes combat a non-starter for your opponent, and often kills off several creatures as soon as she enters the battlefield
At that point you are probably better off just selling to someone who will deal with the grading themselves and maybe make a bit of profit