This is one of the 4 decks Pavel used during his reverse sweep at Blizzcon Hearthstone Worlds Competition. They seem well teched vs Midrange Shamans.
Edit: I knew it. After this amazing performance during group stage Pavel became World champion. This deck in particular performed flawless 2:0 during group stage and 3:0 during play offs (5:0 in total). Not only did Pavel always win with this deck, but also beat 4 druid games (vs Amnesiac) during Quarter Finals in a row and 3 druid attemps by Dr. Hippi in the finals. A true druid master and druid druid scare off!