Ace of Elementals

The Ace of Elementals is part of the Elementals Deck.

Source
This item is a rare drop from the following elemental bosses:
 * Avalanchion in Azshara
 * Baron Charr in Un'Goro Crater
 * Hydrospawn in Dire Maul
 * Lord Incendius in Blackrock Depths
 * Princess Tempestria in Winterspring
 * The Windreaver in Silithus