Sure, its a bomb in a real Limited format, but cube cards are taken from among the best of the best of all Limited (and Constructed) cards
Cloud of Faeries and Kher Keep got new art in this deck
(If you want to learn more about Gladiator, and you definitely should, go here!) And since Commander is about doing the most obviously over the top stuff Magic can hold, and Standard frequently becomes about the most blatantly pushed stuff anyhow, this is probably a use-ful theory exercise on watching for the right kinds of cards
But if you have a Command Tower, which makes mana depending on your commanders color identity, you have access to all the colors you could possibly need
The Crystals: A cycle of five cards (one of each color), all with varying combo abilities
So which is better