If the copy retains the damage...then its probably not worth it. Too bad, I was excited until I read the comments. Maybe could see play in a big warrior deck that runs the new new "summon a copy from your deck" mechanics, but those suck pretty hard too.
This card has ludicrous snowball potential. Great for forcing your opponent to burn a silence and I expect there'll be a lot of that in the next meta. Might be worth it even without elemental synergies.
I'm not so sure about this one. It seems pretty good but your opponent can see it coming and you can't play minions if you want it to be consistent. I think the new shuffle options will be more reliable to focus on.