In fact, a Youtube known as RustyWolf has done a deep dive into the coding behind the game, and it appears that the cards you get are actually set as soon as you choose which Booster Pack you want to open (Charizard, Mewtwo or Pikachu), rather than when choosing from the carousel
This can save a player from being finished off
Bolas' -2 ability allows you to gain control of a target creature
It costs an extra wingding to equip, sure, but the buff it provides to its user keeps increasing, and creating creature/lands means it has the chance at opening up a bunch of synergies that Sword of the Animist does not provide
The Meathook Massacre Rarity: Mythic Rare TYPE: Legendary Enchantment SUBTYPE: - CMC: 2 Mana cost: USD: $36.73 EUR: 26.62 TIX: 10.68 EDHREC RANK: 504 When The Meathook Massacre enters, each creature gets -X/-X until end of turn