Naxxramas was probably the best adventure to get as a beginner, since it gives you a lot of powerful tools for many classes. Unfortunately, with the oncoming Standard format, its cards will rotate out and only be available in Wild games. It still features some pretty great cards: #Standard game mode
- Mad scientist is a staple in every Hunter deck and heavily featured in many of the Mage's. For these classes it's a must-have.
- Haunted Creeper is played in many zoo/face/token decks (Druid, Warlock, Hunter). For the Hunter it has double value since it's also a Beast, enabling many deck synergies.
- Nerubian Egg is also widely used for its stickyness. Warlocks especially love this card.
- Sludge Belcher is one of the best Taunt cards in the game. One of the few cards in the game that I've seen being used by every class.
- Zombie Chow is very useful in control decks to stop early turns' aggro and has also some use in midrange.
- Loatheb adds to a big body the ability to disrupt your opponent's next turn
TheseThe adventures available for Standard are just a few examples, this adventure is filled with good cards. Almost every high-ranking deck onthose released in the ladder these days has at least a card from this expansionlast two years.
Blackrock Mountain is a little less "useful" thanthe second adventure ever released in Hearthstone, with the first being Naxxramas (see below, in the "Wild game mode" section). The dragons you can get from this adventure are heavily featured in Dragon-themed decks (usually for Priests and Warriors). There are anyway some non-dragon cards that should be highlighted:
Previously my answer would have been#Wild game mode
At the moment of this writing the adventures not included in the Standard rotation (so only Naxxramas currently), cannot be bought in any way. Their reward cards anyway can still be crafted with the Arcane Dust.
Naxxramas was probably the best adventure to get Naxxramas as your first adventurea beginner, but after Blizzard's announcementsince it gave you a lot of powerful tools for many classes. Unfortunately, with the introductionarrival of Formats into Hearthstone, the suggestion to prioritize Naxxramas stands trueStandard format, its cards have been rotated out and are only if you plan to playavailable in the Wild modegames. OtherwiseIt still features some pretty great cards:
- Mad scientist is a staple in every Hunter deck and heavily featured in many of the Mage's. For these classes it's a must-have.
- Haunted Creeper is played in many zoo/face/token decks (Druid, Warlock, Hunter). For the Hunter it has double value since it's also a Beast, enabling many deck synergies.
- Nerubian Egg is also widely used for its stickyness. Warlocks especially love this card.
- Sludge Belcher is one of the best Taunt cards in the game. One of the few cards in the game that I've seen being used by every class.
- Zombie Chow is very useful in control decks to stop early turns' aggro and has also some use in midrange.
- Loatheb adds to a big body the ability to disrupt your opponent's next turn
These are just a few examples, my suggestionthis adventure is to getfilled with good cards. Almost every high-ranking deck on the ladder before the Standard update had at least a card from this expansion, and most of them are still played in Wild these days.
#So, for the actual answer:
Get the League of Explorers, whose. There are many good cards will be usable in the Standard format for at least anotheralmost every class, some of which are very powerful and/or class defining (like Entomb or Tunnel Trogg). Also, there's still a whole year before they get out of the Standard rotation.
JustIf you're planning to play in Wild anyway and have some spare Dust, keep in mind that, as soon as the new Spring 2016 expansion gets released, the Naxxramas adventure won't be buyable anymore, unless you got at least the first wing, in which case you'd be able to keep buying the remaining wings with gold. Naxxramas' cards willare still be obtainable through crafting anyway, but they will only be usablecraftable and among them are some of the most powerful cards in Wild modethe whole game.
