MTG precons are preconstructed decks designed for the Commander format
The key is how many artifacts, sagas, and legends you can get into a deck, because if you can untap it a few times, this card will win a game for you in short order
Running original duals is not necessary, but having access to the right colours reliably improves every game you play
You can't divide damage dealt by a single source between them
Not only are you flush with amazing options for single use card draw spells, but the continuous effects and engines are almost without equals (except maybe in green)
Instead, it is the background that is receiving the most flak, with the flat grey being described by many as "lazy"