50 Single Sided Proxy Cards...

... or less if you can't come up with 50 cards you want.

I know you can. Just dig down deep or google some "Staples" that you could use.

Worse case scenario, they sit til you decide to make another deck entirely.

C'mon, what deck doesn't need a Sol Ring or Mana Crypt?

Let's bump up the tier of that deck you only play to keep a casual game flowing and get the attention of all 3 of the other players at the table!