Its ideal when you need to find very specific cards, as it technically gives you four looks (the top three, and the card you draw if you shuffle) which is more than any other cantrip
The ban list is also interesting
5/3 trample that gains you three life is good to stabilize against aggro and lifedrain opponents
(compiled from various sources such as TCGPlayer, Collectr, Pricecharting, etc.) PK Ranger Kat's Bonus Pick: Aw, look at the cute, little Stufful with its innocent, self-satisfied look
For instance, every time you are attacked by an Arbok, Retreat Lock is applied, keeping you stuck in a loop until it is discarded, does not, or can not attack you.