Master Demonologist

Master Demonologist was a Tier 4 minion in the Battlegrounds game mode.

This card was originally leaked in a video posted by the official Korean Hearthstone channel, where it could be seen for a split second (at the 6:50 mark) and appeared in the game's files. Master Demonologist was never officially implemented to the game, but seems to be the basis for Bigfernal. Its internal cost was 7 mana.

Trivia

 * The artwork for this card came from the World of Warcraft Trading Card Game "Icecrown" series, for the card Metamorphosis.
 * This same artwork was reused for Soul Devourer.