This is the Kolento Legendary Secret Hunter Deck he was playing on 
stream. It only uses 3 secrets to synergize with Cloaked Huntress. This helps the deck keep the strength of a midrange hunter deck and not rely on dropping loads of secrets.Too many secrets are very clunky in hand and can cause you to lock your hand.
Too many secrets are very clunky in hand and can cause you to lock your hand. I like this version of the secret hunter build as it allows for more plays. People are still working on the best build, the early decks like the one Tyler Secret Hunter Deck ran a lot of secrets and are really draw dependant.
Kolento was playing this deck at high legend so it’s proven to be effective in the current META. Hunter is due another upgrade when Kindly Grandmother is released, so expect to see a lot of hunters on ladder. It might be smart to start teching against them. 🙂