Klingon episodes from that collectible set:
Broken Bow
Errand of Mercy
The Trouble With Tribbles
A Matter of Honor
Sins of the Father
Redemption I and II
The Way of the Warrior
The Sword of Kahless
Trials and Tribble-ations
Barge of the Dead
Not a bad set, but I think it would have been better with "Bload Oath". In my opinion, that was the best Deep Space Nine episode focused on Klingons. It was cool to see the three from the original series reunited, but weird how differently some of them acted from how they originally were. Kor, who was so ruthless and vicious in "Errand of Mercy" was just a silly drunk. In "The Trouble with Tribbles", I just thought Koloth was way too nice to be a Klingon, what with his being so cordial and bowing a lot. Maybe it's because William Campbell is just a really nice guy. Even as Trelane I thought he came across as just too nice and cheerful to be an intimidating villain. In "Blood Oath", he acted so much more like a "traditional" Klingon that he seemed like a completely different person. The make-up helped achieve that effect too. If I didn't know better, I'd think it was a different actor in the role.