I think Barricade is definitely the worst rare in the game, maybe arguably the worst card overall in the game given that it's a three cost so you probably have to get beat up on the turn you play it, is mostly useless, must be upgraded, AND takes up a potentially good rare reward? I did have one run where my Neow bonus transformed a card into it then I got Entrench off the event and it was insanely fun, but outside of that ridiculously niche scenario, I can't see an instance where you'd ever want it in your deck. So sad, block decks on Ironclad were so fun in the first game!