Lose The Game Effects/Instakills There are a number of alternate wins that can be gained through cards that cause opponents to lose the game, rather than make you explicitly win
Layer in my fandom for Stranger Things on Netflix, in part because D&D plays a hugely flavorful role with the main characters, and once the Stranger Things Secret Lair arrived at my door, I mashed all those fandoms together in a Commander deck I called Friends Forever Playing D&D, featuring Eleven, the Mage and Mike, the Dungeon Master as my commanders
Given the pull rate of Scarlet and Violet 151 being low, pulling one of these might be a daunting task for most Charizard collectors
The reason Opt is so valuable is that it is instant, an effect easily worth a 25% decrease in power for this kind of card
Ugin's ultimate ability is the cherry on top - it's perfectly reachable, requiring only two turns before you can activate it