First, it reveals a ton of information about what is going into your opponents hands by revealing the top card of all player's libraries
As Ive mentioned, I think goad is one of the best mechanics for commander ever
Since no-one knew Magic was going to be a collectible, the (estimated) 1,008 copies of Lord of the Pit from Alpha saw truly brutal play
Compared to the Once Upon a Time chances, Creature + Pact is going to be absolutely superior
A natural weakness of discard decks is running out of steam yourself, but Waste Not helps to counteract the downsides of playing forced discard by providing various forms of card and mana advantage
This deck will make you think differently about every Hero card in the game, which is a big reason why it's so high on the list