If thats not all, you can always use the card to finish off an opponent by pointing it at them, which will happen more often than you might think
Rank 8 XYZ: Tachyon Dragon is a random game stealing card, but its mostly their to make Galaxy-Eyes Full Armor Photon Dragon, which is a 4k beater that can destroy 1 face-up card per turn, which is really good because its an out to almost everything that could be annoying and also a ton of damage
Seven mana sounds like a lot to transform a card, but if you don't win the game after transforming this then things have gone horribly awry
"Boast [Cost]: [Effect]" means "[Cost]: [Effect]
The Reserved List is more than just Black Lotus and the rest of the Power Nine
Rather than combo decks having to rely on something like Laboratory Maniac, which was easier for the opponent to disrupt, Oracle winning the game when it enters the battlefield means that even if the Oracle dies in response, its too late