Can you do anything with the third copy of a card other than disenchanting it?

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So you can only have 2 copies of each individual card in your deck, so if you get a third copy of a card, you can only disenchant it ... right? Or is there anything - like, really anything - you can do with it other than disenchating it? Or can I safely disenchant every third copy of a card I get?
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Should I disenchant cards?
If you're playing Wild format a lot, the safest approach is to never disenchant anything. If you're playing Wild a little, or you think that you might get into the format in the future, disenchanting and you're short on Dust, disenchanting only Golden cards or (currently) bad Legendaries might be an option.What does disenchant extra cards mean?
Clicking on the "Disenchant Extra Cards" icon will open the Mass Disenchant interface. The interface breaks down the number of triplicate cards by rarity, and provides a single Disenchant button which will disenchant all triplicate cards in a single click.Can you disenchant core set cards?
you can DE them of course but when the core set rotates, the ones blizzard 'lands' you, will simply disappear. If you exclusively play standard, you can safely disenchant everything that you have a copy of in core set.Can you have more than 2 of a card in Hearthstone?
You will not receive more than one copy of a Legendary card, until you have owned all the Legendary cards in that card expansion. Similarly, you will not receive more than two copies of any Common, Rare, or Epic card until you have owned two copies of all cards of that rarity in that card expansion.Keep or Disenchant these Legendaries from Forged in the Barrens (Wild)
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Images: George Dolgikh, George Dolgikh, George Dolgikh, Karolina Grabowska