Halloween may still be months away, but that isn’t stopping Bilzzard’s highly-popular card game, Hearthstone. The Witchwood expansion is coming to the game in April and will feature 135 mysterious cards and frightening new game mechanics.

Dark magic has twisted the creatures of the forest and set them loose upon the Gilnean capital in Azeroth, but King Genn Greymane and his lycanthropic subjects won’t make for easy prey. The citizens of this proud kingdom, who can shapeshift into ferocious wolf-beasts known as worgen, are bringing the fight to The Witchwood with tooth and claw—and soon, Hearthstone players will join the pack and help them face down the horrors within.

Once the expansion launches, players will be able to arm themselves during a two-week period, and then the Moster Hunts begin! This new single-player mode will challenge gamers to stamp out the evil lurking in The Witchwood. A pre-purchase bundle is available now until the launch for $49.99. Are you ready to join the hunt?