yugioh cards warrior deck Blizzard - HA01-EN002 Super Rare Then shuffle your Deck. YuGiOh 2008 Starter Deck Single

In 2022, a PSA 9-graded copy of the Magikarp sold for roughly $136,000 USD, cementing its place among the most expensive Pokemon cards ever

Each of these special Happy Meals comes with a booster pack for the trading card game containing four promotional trading cards from a collection of 15, as well as a Pokemon poster and a sheet of stickers

Think of it as a highly educated guess

I think the only holo I ever pulled from a base set pack was a Hitmonchan

This type of effects can either be a way to balance the power of your Pokmon or part of some mechanic aimed to make them more effective (for example increasing the damage of their next moves)