Where was this Card Hiding?

Legendary Gold Foil Cards are the cream of the crop of Reward Cards so they are quite sought after as well as quite pricey. But I haven't been very keen on them. Yes, I do like to get them from Reward Chests but I will much rather just sell them than build a Max Gold Foil Legendary Card. So it was quite the surprise for me when I just found this Gold Foil Kraken just lying in my Deck as I honestly don't remember getting this card.

Now I do like to collect Gold Foil Common and Rare Cards so I am currently selling this beauty on the Market at 67.5 USD which is like 1.5 USD less from the market price. So if anybody is interested in having this card please buy it as I will be buying more Gold FOils from the DEC I receive from the Sale.