I just pulled a Velarok Windblade out of a pack and now I’m feeling bad because I was about to buy the season pass.
But I remember that, in Castle Nathria, I also pulled a golden Murloc Holmes and the game allowed me to disenchant it for full dust… Do any of you know if this will happen with Velarok too?
You will be offered the chance to swap Velarok for another random legendary.
Aldrius is correct. To add little more detail. Blizzard introduced some time ago (maybe half a year, one year - I´m not sure) so called re-roll mechanic. Meaning if you get any card from your reward track which you already own, you will be asked if you want to “re-roll” your duplicate. If you chose to re-roll you get different random card of same rarity instead of duplicate card.
Be careful not to accidentaly dismiss the offer to re-roll, because I think you won´t have that offer later (as I said I don´t know for sure, maybe somone confirm that).
Also I don´t know if re-roll works same with the offers from shop - never tried that, but it works fine with reward track.
So, essentially they made it worse. The rerroll mechanic might be good for cards of other rarities, but getting the dust and being able to craft the legendary of your choice was much better. Now I might just get a worse legendary than Velarok… Patience!