If you put the products that come out later in the order with, for example, also the elite trainer boxes that did come out already then you have to wait for everything to come in
Firstly, it has to have been from one of those early sets
Blacks counter-making is occasionally tied to Vampires, but it has a plethora of ways to make its creatures bigger, often flavored as draining something from your opponent
There's always a chance the opponent will simply manifest a new creature to resume the offensive, making Reality Shift a bit iffy among Commander's best removal spells
It can give you Food and Treasure as and when you need it, on a fairly-statted body to boot
No matter how you slice it, youll get your value from it, whether its drawing three cards and gaining a 5/4 for six mana, or stuffing a bunch of Burglar Rats into a snake-shaped sack