Considering it not only reduces the cost of Elementals in hand but also in the deck, I'd say this card is looking quite strong. Hopefully Elemental Shaman will keep on being good, as it's actually a fun deck to play! 

Shouldn't be too hard to complete, and the payoff is quite decent. Not the best of questlines, but not the worst either. It's somewhat balanced, I believe

Perhaps this will be the beginning of a new archetype. At first glance, it doesn't seem that great, but I might be proven wrong

A simple yet versatile tool, it'll probably see play in most Shaman decks, specially ones running the questline

Guess it'll be okay in Wild, for some decks that run Mechs. I don't see how useful this could be, though

Was never a fan of these types of cards. Seems too situational, and even when it gets to attack it's just not that great

A lot of health, making it harder to remove, and the downside is actually helpful towards completing the questline. It might actually see play because of that

Since it has low attack and not that much health, it'll probably only be worth running for the Rogue questline

Simple and straightforward. Will work great towards the new Warrior questline, and that's more than enough

Nothing insane, but still one more tool for the Rogue questline. Won't see any play outside of that, though

Divine Shield on a big minion is always great, and since it only costs 2 mana it might actually see some play

Doesn't seem very impactful, but still a fun questline for sure. Hopefully a competitive deck can be made around those gizmos and SI:7 cards

Another somewhat sticky tool for Deathrattle Demon Hunter, which is great since there's a lot of leg room to fit in new cards into that deck

Strong defensive tool, and also flexible. If control Warrior becomes competitive, this will surely be in it

The combo effect looks good, and it should be easy enough to pull off since you'll be playing SI:7 cards for the questline anyway. All in all, a good card

One more enabler for the questline. Should be easy to buff it up a few times, but even then it's nothing gamebreaking

A fun card, with the potential to make some big rats but usually it'll just fill the board with 1/1s. Looks like an attempt at enabling the Rat King, but I'm not sure how strong that card is, either

Simple and straightforward card. Not sure where exactly it'll fit, but at the very least it'll be okay as an Arena pick

Good aggro tool, might see play in token Druid decks. The fact you can toss it back if the board is empty gives it an extra layer of depth

A decent card even without getting buffed to gain Rush, so it might see some play. Surely a good Arena card, at the very least