Its both an immediate, hard-to-remove threat and a future buff for something even scarier
When a Players Pokmon is Knocked Out, that Player takes a Prize Card, and losing all Prize Cards contributes to game loss for the Players
We no doubt want to consistently untap our general and move up the chain, just as Jimmy and Josh discuss during their preview piece
Many decks tried to smooth out their mana curves in order to try and make Void less devastating, but there always seemed to be a good number to choose, and the existence of quality bounce spells Repulse and Recoil meant you often had a decent read on their hand even if you hadn't looked at it directly and also made it much easier to leave them with multiple cards in the same casting cost and not take damage while building up to five
Decks The latest Rose Dragon type Yu-Gi-Oh
In short, the idea is to carefully peel away the foil layer from one card, trim it down, and glue it onto another card for visual effect