MOM has a bonus sheet, Multiversal Legends (MUL), consisting of reprints of legendary creatures, some of which (like Atraxa, Praetors' Voice or Ragavan, Nimble Pilferer) are long-time MTG staples
The 4-of-a-unique-card limit was a formative rule for constructed Magic issued on high with the first mandatory tournament rules, along with 60 card minimums and 15 card sideboards
This deck actually has a unique feature in its release for the commanders: Its backup commander is a Spacecraft, Inspirit, Flagship VesselInspirit, Flagship Vessel
It has sometimes been compared to the best card in Magic Ancestral Recall
To stay on track here, I won't consider the old lifelink, so more Unflinching Courage, less Armadillo Cloak