Nobody is discussing Sparky!
Do you provide the deck that the AI plays?
Can you give it a deck that you don't own the cards for? (So that I can practice against Teferi control without spending wildcards on Teferi.)
Do the decks have to be Standard legal? (I want to know how a particular card does in a matchup, so I want to be sure I draw it in a practice run ... can I play a deck with 8 copies? If not in my deck, then in the AI deck?)