People like to think they are better or more special than others
While Infect (1) has the advantage of creating a Bloodrot Pox token upon hitting a hero, its effectiveness may vary depending on the overall strategy of the deck
Even more problematic, getting a double-sleeved card into the HCD Perfect Fits is really hard
Creatures that refocus the game towards every player copying or recurring them is a big red flag during ban discussions, with Prophet of Kruphix being a great example of this
Life of Toshiro Umezawa There are some amazing illustrations and amazing stories behind the artworks for Sagas, a card type created for 2018s Dominaria
Paired with something like Waste Not, which reads, Whenever an opponent discards a creature card, create a 2/2 black Zombie creature token