They can almost always know something, plan something, or invent something that will win the day
Let's go over them in order: Just three mana - Sorin is incredibly strong as he can come down very early
Retrosphere and Finders Keepers arent worth the cost
Only time will tell if the doubling of prices and the aggressive product schedule are the downfall or an outright success for Hasbro and their goose that lays the golden eggs, MTG.
Meanwhile, Mox Opal rewards artifact density by turning on quickly in decks full of 0-cost artifacts, and Mox Amber fits perfectly in commander-reliant lists, generating colored mana as soon as your legend hits the board
A lack of flash is a huge stroke against it, however, though being able to protect against a board wipe at instant speed would probably be a little too pushed for the deck