Heres my theory: Magic: The Gathering is a collectible card game and Fat Packs are more collectible than regular boxes because of the inclusion of dice, set guides, card boxes and (at one point) novels
Here are some neat synergies that people have mentioned already Since its already on the battlefield, copying cards like Dark Depths or Thing in the Ice turns it into a copy with no counters on it for easy activations
It wasn't an interesting minigame or a card people were eager to play, even though it could be strong
And then there's the added benefit of not worrying about your own creatures if youve built your deck around demons, devils, and imps
AGGRO IS REALLY GOOD IN COMMANDER In previous set reviews, Ive been pretty cold on the likes of Giada as a Commander
You can see an example in the third picture