Lets simplify
Generations and Blue Core These Asian fakes are categorized by their vendors in so called gens oder generations, being 5th the latest as I am writing this article
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You can guarantee this with Invasion Plans, then discount your creatures with Ruby Medallion to play a few each turn
Rottenmouth Viper, on the other hand, is exceedingly strong in any black deck even when cast at 6 mana, but squirrels ability to dump out Food tokens onto the battlefield early makes it castable at 4 or 5 mana most games, making it an early must-answer threat that will dominate the game
While you can just quest the card to gain two lore, Aladdin, Heroic Outlaws Daring Exploit ability allows you to not only gain two lore, but force your opponents to each lose two lore, whenever you banish a character on your turn using the card