Any Creature that manages itself like that and scales so well is worth peeking at for a Commander build
Three Tree City is a fantastic legendary land for a typal deck that plans to go this wide, especially since sacrificing Treasure tokens or using Ashnod's Altar to pay for its ability plays into your sacrifice synergies
One card every Aristocrats deck has in common is [card]Doomed Traveler[/card]
Jailbreak is pretty innocuous on first read, but when you consider that it can give an opponent a beater or other large dumb body and get you a combo piece out of the yard for just two mana
Muldrotha, the Gravetide Good elementals can provide lots of value, and Muldrotha, the Gravetide is yet another
While Everyones Invited, the Secret Lair Commander deck, is technically a precon released this year, it's so far beyond the normal quality and bounds of mass-market releases that Im choosing to ignore it for this type of article