Hearthpwn

is there a spesific card you want to make with `duplicate`?

Honestly, it's probably one of the weaker choices in the deck. It does work on Reno and Kazakus when you can get it to trigger as well as Servant of Kalimos, Rag, and company, and against aggro it's great to dupe Sludge Belchers or Tar Creepers. Pyros is also a solid value dupe in slower matchups.

Long and short, most of the value and taunt minions are solid Duplicate targets, but there isn't any particular reason to use it outside of that value, which might be unnecessary in this type of deck. Duped Belchers have won me a Pirate Warrior game or two though, and duped Kazakus a couple control games. Mostly I just use the card because I love duplicate effects. That and I felt like I wanted a little more secret density to go with both Secret draws in the deck