Thrasios's ability to generate card advantage mainly drives the deck, with Vial Smasher the Fierce allowing you to play black and red, giving you access to new combos
Gravecrawler is the perfect example of a Zombie that never stays die, being able to return to the battlefield so long as you control a Zombie creature
Charizard was the crown jewel of the original Base Set of the Pokemon Trading Card game, and this status has followed the mon even decades later
What's important to note, is that while Ob Nixilis normally enters the battlefield with a mere three loyalty, the copy enters the battlefield with a number of loyalty counters equal to the sacrificed creature's power
Yiazmat is extremely difficult to defeat in-game, so since you went through all the perils of completing this sidequest, now your opponents have to go through the perils of battling this nearly indestructible ultimate boss
When it enters any list, it is polarizing to a level that goes beyond other cards known by that adjective, such as Oko, Thief of Crowns