If you scan a card at 1200dpi you will be able to see certain print patterns and will be easily able to see solid black elements that have sharp edges on a genuine card
It doesn't matter how the permanent card arrives at the graveyard, or where it comes from: Discarding, milling, surveilling, or a land being destroyed are all descend events as long as the permanent card gets to the graveyard
The cost of a fake is too high to rely on photos alone
It's attack also isn't that bad
However, once many people get the product, the price is getting more settled
Numot, the Devastator Numot, the Devastator made my list of Saltiest Commanders, to some rather controversially