I have played casual Five Color decks extensively
Green has loads of in-color synergies that work, and you don't even need to do this as a sorcery, so you can wait until the end of someone's turn, tap out and discard a card and dig up something nice and toss it onto the battlefield
Bandai has confirmed Red Super Parallels will not carry over to future sets, giving them permanent scarcity
Once we get one of these on the battlefield, all of our Flickerwisps, Restoration Angels, and Cloudshifts say "when X enters the battlefield, draw a card." Drawing these extra cards means we find more blink effects, which means we draw even more cards, and the cycle continues until we overwhelm our opponent with card advantage
Hellkite Courser $16.44 Hellkite Courser is a Commander reprint that excels when you have expensive commanders in the command zone, especially those that you need to cast, wait for a turn, attack, and get value