You can win the game as per the normal ways you win Magic your opponents go to zero life, or they get decked, or some other combo kill but you can also win the game by figuring out which cards are in the Case File envelope
3 Emet-Selch, Unsundered Esper Terra Gogo, Master of Mimicry Golbez, Crystal Collector Hope Estheim Joshua, Phoenix's Dominant Kefka, Court Mage Kefka, Ruler of Ruin Kuja, Genome Sorcerer Quistis Trepe Shantotto, Tactician Magician Tellah, Great Sage Terra, Magical Adept The Emperor of Palamecia The Lord Master of Hell Trance Kuja, Fate Defied Venat, Heart of Hydaelyn Vivi Ornitier Xande, Dark Mage
I am always happy to hear about your opinion on this topic
He wore it at WrestleMania 38 in a custom diamond-encrusted Pok Ball pendant
Id say its worth the include just for the card draw
Ideally, you should discard 2 Leon VIV 154 with this ability so that you can deal more damage with Charizard VIV 25's main attack