If youre happy with your new hand, put 1 card at the bottom of your library
If built competently, Sauron can be a deadly commander
These additional decks expand your strategic options and provide more cards for your collection
There's also the question of whether Friede, in particular, will be keeping his Charizard as a Dark Tera Type
Ragavan FTW: These are the best cards in Modern Horizons 2 The flipside of this is Tovolar, the Midnight Scourge - a 4/4 that still lets you draw cards, but also allows you to pay X, one Red, and one Green, to give a Wolf or Werewolf you control +X/+0 and Trample until the end of the turn
Deck-building strategies can vary widely, from aggressive tactics focusing on overwhelming opponents quickly to more defensive approaches that aim to control the games pace