Dual-Quest: Carnassa Roar & Giant Carpet

And in the Vault is...

General rule: First complete Unseal the Vault, then The Marsh Queen.

Try not to use many 1-Cost minions while you're Unsealing if you don't plan to rush down the opponent.

  - but if you do use them, there's always Halazzi.

Spirit of the Lynx is great, both aggressively and defensively.

Magic Carpet is cool with Jar Dealer while completing the Marsh, and even better after completing with all the broods. Plus, you can buff Sea Giant if you play it with 9 minions on the board.

The Jenkins + Hounds + [Hearthstone Card (Ramkahen Roar) Not Found] finisher is easy to use and can deal from 14 to 26 damage.