I believe I started playing hearthstone in 2014.
It would be 10 years, but I have done things backwards for 10 years.
Unlike, other people, I had to use double or even triple the effect to make my decks be not total garbage.
So you see?
10 years of game play on and off, but decades of experience 30 years+
I have been playing hearthstone for decades at this point.