Death knight card collection

[SparkyElf-2852]

@GnomeSayin-11972

[Added 4/11] The team is investigating an issue preventing some decks from being playable. The issue comes when you–or the opponent you queue into–builds a valid deck and then re-rolls away one of the cards within that deck (making it invalid) and then tries to queue with that newly invalid deck. The workaround is to completely rebuild the deck from scratch (not copying the deck code).

PS See also this, could be also relevant:

A PROPER FIX to Missing Death Knight Cards in Decks after Patch 26.0 - Hearthstone