Welcome to the game!
A game based on Tolkien's Legendarium, which in practice means Zombie Thorin Oakenshield and some hobbit becoming the Steward of Gondor.
When you decide to play a quick game, it will take forever to build your deck and another forever to shuffle it.
Then you will start playing, and it will usually be really difficult, and once you think you more or less control the situation, WHAM! enemies everywhere, impossible threat in the staging area and to top it all off whacky side effects that forbid you from actually doing anything useful while you try to hold the tide for as long as you can and mutter quietly: "...why?".
Or maybe you are confortable during the entire game while nothing important happens, slowly adding ever more progress on that massive quest and sincerely hoping that either you get an enemy that doesn't die in one combat phase or end the quest already before you pass out from boredom.
You can also have the opportunity to explore places in Middle-Earth both heavily explored and barely touched upon by the original lore. But mostly the latter, leading you to pick up your map 80% of the time a place is mentioned.
In either case, you will decide to visit the website to get an idea of the published materials and...whoa. Now that's a lot of content. Literal years of content. You should expect to get up to date in 2024 or so.
Then comes the deckbuilding options, which at first look massive and hugely varied until you actually start playing and realize that it's much easier than it looks, you just have to put Éowyn with two other heroes and that will be everyting for like three cycles.*
The community is awesome, especially the blog Tales from the Cards, although that one comes with a perk: the blog's writer Ian Martin takes as much time to publish new stuff as his surnamesake George.
This game is also responsible for the greatest evil ever created by mankind: Sleeping Sentry. Don't ask what that card does if you value your sanity.
This game is awesome.
*Although, to be fair, you can literally pick any card in the collection and Seastan will beat The Battle of Carn Dûm with it. And a few monts later that card is guaranteed to be nerfed.