While i take your point about sideboard specific cards i would class the blasts and disenchant very differently - one is a occasion maindeck card with very wide sideboarding potential while the other is very obviously a sideboard only colour hoser
The fact that this combo is pulled off by the interaction between a lotus artifact (which are very prominent in East Asian and Japanese Buddhist art and symbology), a moonfolk from Kamigawa (a plane directly based on Japan), and the legendary creature that represents the patron spirit of all moonfolk
Meanwhile, stax pieces like Narset, Parter of Veils, and Alms Collector turn this into a net-positive card
In limited environments, Medicant Core's max speed ability will allow you to duplicate big, expensive artifact bombs like gearhulks for practically nothing, but in unlimited formats like Commander, it can get really wild, duplicating mana rocks and game-bending cards from thirty years of Magic sets
So when you actually cast Emrakul it is absolutely the best at winning the game as it comes with a free Time Walk