When you add interaction to your Commander deck, consider three things: diversity, efficiency, and relevancy
Structure Deck: Yugi was a significant improvement in lowering the entry barrier to the OCG as it contains many reprints of cards that were commonly played in competitive decks
Swablu C - Fluffy Guard During your opponents next turn, this Pokmon takes 20 less damage from attacks (after applying Weakness and Resistance)
Its Normal typing provides it with a broad utility across various battle scenarios, although it lacks the unique type advantages that other Pokmon might possess
Furthermore, buying singles will always offer a better return for your dollar, but that's another matter entirely
Furthermore, in conjunction with Hop's Snorlax, Hop's Choice Belt and Postwick, this attack can do as much as 120 damage while also dealing 30 damage to the bench, making it an incredibly effective tool for disrupting the opponent's early game setup