Of course, if you are a collector of Disney Lorcana, then there are further dimensions to rarity that you might be interested in
In the meantime, learn how to build a MTG Commander deck with our handy guide, or read our rundown on how to build a Magic: The Gathering deck if you're a total novice.
MDFCs are mainly more complex split cards that only let you cast one side at a time
He does have a bunch of tags on him, including Villain and Pirate, so maybe that makes him somewhat relevant somehow
For the first kind, think cards like Ulamog, the Ceaseless Hunger, Craterhoof Behemoth, or planeswalkers like Ugin, the Spirit Dragon
This artifact-making value engine of a card used to make waves in Modern, and even though it got a semi-recent reprint in the first Modern Horizons, it's still valued at $53 (all prices from MTGGoldfish)