Bad I feel. This is no Shadow Visions that can tutor spells from your deck or create third and fourth copies of key spells. Yes you probably get a decent minion, but you could also put a decent minion in your deck and not pay 2 extra mana.
Chameleos is way better at getting information and how much play has that seen? You also don't pay extra mana for a copy with that card.
Cloning Device seems pretty good. “2 mana draw a good card” is certainly worth it, and minions in your opponent’s deck are probably good (or at least above average). It’s not obvious to me what archetype this will work best in, but it seems like it can see constructed play.
Cool idea, but I really believe this is too weak by itself. 2 mana in early game is a great tempo loss, which will not be worth the information you get. Chameleos gives similar information for free and is not played. Late game the information advantage will be really low and I would rather have my own card (and 2 more mana).
That said, Priest has some serious cloning going on, so we don't know about synergies and buffs for using clones. This card might be an enable.
Meh card, useless vs aggro and spell decks, and cant steal hero card . Unlike Drakonid OP which can steal any card and most importantly come with a very good body for its cost so even you got bad card it doesn't really hurt much.
People thought Chameleos would be good, and if it wasn't this won't be.
Chameleos also gives you information, and the information is more relevant, because your opponent is holding the card.
Chameleos also lets you play a card your opponent has, but you can decide to not play it and hope to get a better card from your opponent's hand.
People are saying this is like a 2 mana "draw a card" from your opponent's deck. Chameleos cost zero in order to "draw a card" from your opponent's hand. You only have to pay the card cost and directly play the card.
Edit: I just realized it's discover. But only minions. Don't know how useful minions are, because they tend to be run with synergies in mind. Also, still not good enough, imo. Shadow Visions is better, and you dont want to run both.