Its one of the top MTG colorless cards for protection, so its quite easy to see why it cemented its reputation among the best colorless cards MTG players can get for decks that rely on its commander to survive
Phoebe is featured in this set as both Rainbow Rare and normal Full-Art coming in at $40 and $30 respectively, so its a very popular card
Shantotto Shantotto's a much more familiar design, leaning into Izzets tried-and-true spellcasting territory
The Legendary Artifact is most often played in the Modern and Commander formats
The card itself, on the surface, is rather weak, but it fits wonderfully with so many existing strategies that it can be slotted in quite easily, with little fuss
Put Daryl in multiplayer and the design changes completely