Normally, that means that no extra damage is assigned to the defending player
Scarcity creates value, and if many people are going after a particular card, it eventually becomes low in supply, increasing its value over time
In a brief FAQ portion, Wizards also confirms that: Jumpstart decks, liked Draft and Sealed decks, can be exported to your collection and then used in Direct Challenge matches against your friends Jumpstart cards are legal in Historic All Jumpstart cards - except the unique Basic Lands - will be craftable, and remain so after the event ends, for use in Constructed formats Jumpstart theme booster packs will be for sale in the store, but only during the event If the sound of quickly throwing together two themed packs into a ready-made deck, and throwing down against the internet's finest appeals - you can start playing Magic: The Gathering Arena for free right now
I have put Yawgmoth, Thran Physician on 7th place on my personal list, but I can see that he deserves better
Bone Dragon is a threat in the air, but we might not have 7 cards we want to exile from our graveyard