Milestones
You don’t have to kill everything — how to reward players differently in D&D
The first time I realized I could just give players a level whenever I felt it was appropriate for the story, I almost fell over.
Hearthstone Tavern celebrates a milestone with free stuff!
Over 100 million people have played Hearthstone, so the Hearthstone team wants to throw an epic celebration to thank their players -- and what kind of party would it be if they didn't reward us with free packs and plenty of extra gold?