Hello, by doing this you can get 100% free hearthstone beta keys.
http://kr.blizzard.com/promo/ko/hear...e/betakey/form
go to that link, and fill in your email address do the human test and tick the box and press the purple button, it is all in korean however the keys work on any battle net account as the keys are not region locked, once you have sent off the request normally takes around 2 hours to come though and the email looks like this....
https://i.imgur.com/rjzCc2D.png