Physical cards will be obtained from $15 starter decks expected to contain at least 30 cards and boosters costing $4 - cheaper than a typical MTG pack - each containing 13 cards: nine commons, three rares and a card that serves either as a token or a "foiler" - more on that in a second
To have it for a single white mana is amazing
As such it is absolutely the better of the two at the front end
So, in theory you should just get the maximum four copies of Dumbo, Ninth Wonder of the Universe, for your Lorcana deck, then build the rest of your deck around those
Of course, even if you arent particularly interested in the story, the free promo card that comes with the first volume may be enough to entice you
It may have left the battlefield, stopped being an artifact, or another player may have gained control of it