I would say carni cube is the only safe one. Big spell Mage hasn't don't well in any of the games I've played again (only 6 so far though, beat all 6). But if it ends up not being great, summoner and tyrant aren't worth crafting, and you won't use them in any other deck. Then corridor is really only viable in heavy draw aggro decks, which I think will be a thing still, so there is some potential, but I have a feeling other things might just be better.
Carni you can literally put in any deck and play it on any minion and feel good about it. Sleeper card of the set imo.