mtg kamigawa neon dynasty precon commander decks Kamigawa: Deck Players wanting to play the deck in Commander should swap out the extra copy of Mossfire Valley for a basic land or the land of their choice. Neon Dynasty Commander Upgrade Guide:

Thats serious power

Now, in the format I normally design for (commander), this doesnt change anything, because those cards still have a multicolour identity

The fact that the rarities are fixed makes them balanced for Limited play, while other boosters (set boosters, collector boosters) arent

Another example in this area is Cabal Therapy which can be turned on yourself for a one shot discard

A good example is with the Cryptolith Rite decks, where, despite Cryptolith Rite losing value against sweepers post-sideboard, you often want to leave some in because the payoff when the card is good is too high to pass up

Cheap interaction like Duress and Cast Down rounds out the list, letting you control the game while dealing damage as you do so