Notably, if you put an Aura card onto the battlefield this way, it can't enchant Genesis Hydra
A brief disclaimer: As someone who used to work in Magic R&D, I feel much more strongly about banning cards to make the format better than unbanning, but banning is a very tricky thing in a game like Magic where cards hold a lot of value
If that doesnt sound too hot and youd rather sell directly to buyers, you can list the cards on online markets like TCGplayer, eBay, or the ChannelFireball marketplace
A Near Mint card must not have bends, folds, creases, stains, or any signs of play
Both copies see each other enter the battlefield, so youll end up gaining 12 life and drawing four cards in the exchange