Hi,
I bought a wild booster pack ( 2 legendary and 25 packs). the problem was when I bought it, one of the legendary was Lord Jaraxxus ( warlock 9 mana) I had this card already because it is a card of the essential set.
Could you help me, please?
Cards in the Core set are never in your permanent possession. They are given to you on a loaner basis. Blizzard can at any time (usually April of each year) change the contents of the Core set. At that time you lose all “old” Core card and gain access to all “new” Core cards … for as long as they remain in Core.
Lord Jaraxxus exists in two forms. The loaner version in the Core set, as well as a regular version that is part of the Legacy set. The UI will normally only show the Core version, except when you set the expansion selector to Legacy.
Note that only the Legacy version of Jaraxxus is allowed in “Classic” mode. In Wild and Standard, the Core version can be used. But as said, that version might disappear in the future. So while you are able and allowed to disenchant the “Legacy” version of Jaraxxus you found, think twice about the consequences before doing so.