Quick observations:
1 murloc
3 pirates (including cannon)
lots of anti-spell cards (can't be targeted & when opponent plays a spell...)
Tree of Life - extremely long games, super-late game druid? anti Alexstraesza? Hero power tons of minions then full heal turn 9?
Hemet Nesingwary - Destroy a Beast. Interesting since druid will now use beasts too and can be used against druid of the claw, their most commonly used card. Can save Black Knight for another taunter.
Fel Reaver - 5 mana 8/8 but discard 3 cards every time opponent plays a card ... holy bad but maybe good in some super-specific deck somehow? Like super-rush deck idk.
Anima Golem - 6 mana 9/9, dies if you don't have another minion on board at end of each turn, great for freeze mage?