Hello. I am selling 3 methods for hearthstone packs for 20$.
All 3 methods are safe. First method is slow, but gives you a lot of packs for invested time. 1$ invested, aprox 10 packs. Second method is very good for reselling your packs, and involves talking to gamemaster over webchat.
Third one is Apple store one.
Send me a message if you are interested, or send me a trade request if you are interested in buying it.
Proofs: (using method 2 during ungoro, using method 1 on this expansion)