Paul initially purchased the card in Dubai for $5,275,000 in 2021, setting the Guinness World Record for the most expensive Pokmon card sold at a private sale, according to a Guinness news release
Different factors influence Pokemon trading card price, but the main factors are the condition of the card, the rarity of the card, the characters popularity, the strength of the card, and some external factors that increase the popularity of the card, for example, some promotion from some well-known person
Whenever Life of the Party attacks, it gets +X/+0 until end of turn, where X is the number of creatures you control
If you dont cast the cards, they go back to the graveyard, which can be quite significant
This is expressly not a Ninjutsu style effect, though we do have at least one instant with the ability