pokemon gold and silver cards Mr The Cards Of Pokémon TCG:

It is better to use a bubble mailer or padded envelope to ensure the safe arrival of the trading cards.

that's just insane

Swat lets you change all of the targets of a spell not just one making it the best way to interact on the stack outside of conditional answers like Pyroblast

Duress has always been a premium anti control and anti combo card

So, having these cards legal would make it so no one would want to play for ante (especially considering the average price of a Vintage deck), meaning these cards would basically let you play a smaller deck since they would get removed and make you more likely to see your key cards