"You know what I like about Klingon stories, Commander? Nothing. Lots of people die, and nobody makes any - Quark
The Klingon equivalent of the search for the Holy Grail, this Worf/Kor/Dax episode is reminiscent of second season's "Blood Oath" but features a more internal conflict. While the premise might sound like Indiana Jones and the Last Crusade, it plays out more like Frodo's quest in The Lord of the Rings. Finding the sword is easy (perhaps too easy) but bearing it back to the ship is like taking the One Ring to Mount Doom. It's not just a burden but a divisive force.
Featuring one character from each of Star Trek's first three live action shows, the episode is a treasure trove of Trek history, with references to quite a few past episodes, yet remains accessible to new fans by giving them enough information to get by. Director LeVar Burton plays up the biblical moments of the episode, from Kor's stories (well told by the lively John Colicos) to the finding of the Sword (which David Bell scores in a way that would make Howard Shore proud).
Unfortunately, the episode takes place almost exclusively in the cave set, giving it a limited look and scope, and the internal conflicts get tedious by the second half of the episode. While it is fun to see Kor again, and it's great to see Worf get finally get an A story (there is, in fact, no B story) the episode ultimately falls short of its potential, although its conclusion does leave the story open to a sequel; perhaps someday in the future there will be a new Star Trek series that does "The Sword of Kahless 2"!