The colorless sources are another topic
By giving all your creatures a base toughness of one , this makes it very easy to kill them with cards that give your opponents' creatures -X/-1
Gladion's Showdown can only be activated when it is the final card in your hand, like a true brooding antihero, Gladion works alone and won't come out until your other cards are gone
Urza's Command can drop the power of other player's dorks out of nowhere, make a Powerstone, make a tapped Construct token to win the game, and then scry and draw, so I think that the Construct and scry and card draw are the default here, and that's pretty good for four mana instant speed
A good deck box should be made from archival-safe, non-PVC, rigid polypropylene materials that will protect the cards from damage and deterioration
Meneldor, Swift Savior Meneldor, Swift Savior is a good commander for a deck that relies heavily on ETB triggers