[Update]: Hearthstone's March of the Lich King expansion has added a brand new class - the Death Knight.

After a whole bunch of teasers and previews, Hearthstone's Voyage to the Sunken City expansion has now finally arrived. It brings with it a boatload of new cards including creatures so gigantic they simply can't fit on a single one, Naga as an interesting new minion type to experiment with, as well as a whole bunch of changes to the Core Set.

First things first, allow me to share with you the rather unique cinematic trailer alongside a brief rundown of the three main new keywords and mechanics:

Naga are a new minion type that will become a permanent addition to Hearthstone moving forward. The very first batch of Naga cards mostly care about you casting spells while they are in your hand, which will then trigger powerful effects when you finally do play the Naga card itself.

Colossal minions are creatures so ridiculously massive that they simply cannot fit on a single card. As such, when you play a Colossal minion it'll immediately summon all of its accompanying body parts alongside it.

Dredge is a new keyword that lets you look at the bottom three cards of your deck in order to pick one and bring it to the very top of your deck. This might not sound all that useful now, but it's well worth mentioning that Voyage to the Sunken City has a variety of cards that put extremely powerful minions and spells to the bottom of your deck!

If you're curious how all of these mechanics and keywords look like on actual cards, you should check out the official gallery. Blizzard has sorted everything nicely by cost and class, so you should be able to get a pretty good idea of what each one is trying to do in Voyage to the Sunken City.

As for the Core Set changes and the freshly launched Year of the Hydra, you can expect to see 57 cards rotate out and 72 cards rotate in. This means that the Core Set now has 250 cards, including some fan-favorites like the original League of Explorers, Wild Pyromancer, Acolyte of Pain, and the list goes on. You can read more about the changes and additions over at Year of the Hydra overview.

The final thing worth mentioning is that the Mercenaries game mode will be updated in a bit of a different fashion throughout the Year of the Hydra. There will still be events and balance changes added with every patch, but the major bits of content will only be arriving with X.4 updates. So while you will have to wait a couple of months for the next big Mercenaries drop, it should at least be a rather sizable one.

Have fun with all of the new cards!