mtg duskmourn collector booster box Magic the Gathering: House of Horror Commander Deck Set (Set of 4) Look for 10 new Special Guest cards! Duskmourn House of Horror Magic

Epic cards will be alternate versions of existing cards, with numbering that goes above the base card numbering, similar to Enchanted

When this is the case in any Trading Card Game, the cards are known as Secret Rares

You can watch videos of people opening sealed booster cases and boxes to verify this for yourself

The Enchanted variant is looking fairly valuable as well, currently sitting at around $190 market price, while its Legendary is fetching around $6-$8 right now as well

The selection almost always includes a mixture of brand new cards (where the card name, in-game rules, and art are all new) and 'reprints' (new versions of existing popular cards, which keep the same name and rules, but may feature new artwork and sometimes updated wording)