https://us.forums.blizzard.com/en/hearthstone/t/dont-dust-your-wild-cards-very-serious/
Referencing to another thread that concerns DE of Wild cards, It seems the Dev’s ambiguous words again create a problem to the player base.
This type of statement create a scenario that create unrest to the players that cannot plan in advance to cope with the game. The game is designed with a structure that is very demanding of careful planning of individual resources.
While it seems like a heads-up to the playerbase, but it really just leaves players guessing and it does not help.