Building your first Hearthstone deck Hello! Today on Blizzard Watch, we’re going to take a look at how to build decks in Hearthstone. Deckbuilding is one of the core skills needed in order to progress up the ranks to Legend, and unfortunately, it’s not covered in the in-game tutorial. In this guide, I’ll show you how you can create your own effective Hearthstone deck, and explain some common Hearthstone terminology in the process. Ready? Let’s begin.The very first step you’ll want to take is to pick what theme your deck will have. Essentially, what strategy is your deck going to use to win the game? There are five basic themes (often called types or win conditions) that your deck can choose from.