sleeved packs vs booster box Pokémon TCG: Sword & Shield: Battle Styles: Pack With deep trust and steady guidance Scarlet & Violet - Sleeved

But it seems to me that the real reason is financial, since it takes a much bigger investment to acquire a deck with original cards, while a deck with proxy cards is much cheaper

However, they can still be Set without controlling their respective Equip Spell Card

Buddy-Buddy Poffin can be an exceptional Pokmon search card if it can be consistently found and played on a players first turn to help their deck set upfinding two Basic Pokmon with an Item card can be a huge boon to setting a deck up for its future turns

Additionally, when "Natasha" is in the graveyard after having been properly Ritual Summoned before, you can banish a "Cyber Angel" monster from your Graveyard, Special Summon "Natasha" and take control of an opponent's monster