Blizzard has revealed a new card from Hearthstone's

Archbishop Benedictus

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The card is a Priest legendary called Archbishop Benedictus, which has a crazy effect that could change the game in some fascinating ways.Archbishop Benedictus has an attack value of 4, a health value of 6 and a mana cost of 7, and it features a Battlecry ability that allows you to "shuffle a copy of your opponent's deck into your deck." Check out IGN's exclusive video reveal above for a few interesting ways this card's ability could be used.As previously announced, Knights of the Frozen Throne launches in August as the latest expansion for Blizzard's collectible card game. The expansion brings with it 135 new cards, including nine legendary Hero cards that transform the heroes into Death Knights after being played. Knights of the Frozen Throne will also add free missions that are available to all players.For more on the upcoming Hearthstone expansion, here's an overview of everything Blizzard told us about Knights of the Frozen Throne

Alex Osborn is a freelance writer for IGN. Find him on Twitter at @alexcosborn