Artifacts - 10
Of course, you can also just make sure that even destroying your own stuff is to your advantage if you want to, or just play it to an empty board on your side
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While theres not going to be a set answer for every deck, Ive personally found that 4-5 is a good minimum for most decks I play in Commander, though if you play a deck that doesnt use a lot of creatures, you could easily find yourself playing more than 10
Again, its never a hundred percent guarantee that every future leak will be correct, but since this particular leaker has been so accurate, it does seem that players can trust their accuracy and the information received from datamines in Pokmon TCG Pocket
Then of course there are the simplest ones that simply draw two or more cards which was what my last list focused on