Elestan

Are you sure you haven't gotten another? Check your collection and your memory. It is impossible to open 40 packs without getting a legendary. There has not been a known case of anyone not getting a leg in 40 packs. There's a thing called the pity timer, which increases your chances of getting legs starting at around pack 25 or 30, and you have a 100% chance to open a leg if there wasn't one in your last 39 packs.

I got so trolled today with the brawl pack...

If you have a Forgotten Torch and get another from Tome, then you have to be careful with it.

@KingMe what can you complain about? You can now craft that super OP card.

In my first pack of MSoG I got a Kazakus (and called it) and a couple days later I got this golden beauty from the brawl pack.

Right now the strongest decks are probably Renolock and Reno Priest, as they have no counters and have about 50-60% winrate against pirate warrior. And Renolock counters Reno priest, so Renolock is strictly better. Only problem with it is that it has about 6 legendaries and is one of the hardest decks in HS to play (although you can replace Rag and Jaraxxus with some other high quality cards).

The same happened to me yesterday. I was wondering if I should craft Cairne, but opened my pack first and there was a golden Cairne staring at me. I nearly fell out of my chair with shock.

Generally you should be trying to get a certain deck or deck archetype that you want to play, and trying to build up enough dust and cards to get it. The adventures are great value for most decks, as most decks use cards from an adventure, and on average 1 wing of an adventure is better value than 7 packs. You get 1 (or 2) guaranteed legendaries (which are usually quite potent, being legendaries) and then many extra cards besides. Arena is also a great choice to play to improve both your collection and skills. It will teach you a lot about the game, although to be at least partially successful