u/Creepy-Cow-7391

I came back to the game after about 10 years (I remember I quit around the time Wild mode was introduced and Secret Paladin was a popular deck). The purpose of this post is for you guys to tell me what I should know about the game nowadays.

I recently discovered that cards apparently have some kind of duplicate protection where you can’t open a duplicate unless you already own every card of that rarity. Is there anything else I should know?

What’s worth spending gold on? Packs or Arena? Or is it better to spend it on class sets?

Do people actually play Wild mode? Or is the community mainly focused on Standard?

Also, when you’re in Legend, is the rank number shown to the player your worldwide position? Or is it separated by server?”