Warden's Keep adds a singular quest that has the Warden journey to an abandoned Grey Warden fortress and free it from demons. In it, they can potentially acquire a couple of new abilities (of variable usefulness, depending on the Warden's class) as well as the gorgeous Warden Commander armor set and some blood mage equipment. Finally, there's a chest at the keep that allows storing valuable items for later, something that was sorely missing from the base game.

It's a rather simple DLC -- it's fine if you own the Ultimate Edition, as it feels like a fun little sidequest in the middle of nowhere, but as $7 DLC, it's a bit... oof. Even worse when you think about this as a basic game feature (the party chest), as well as one of the nicer looking armor sets, being cut and sold separately.