Clearly not a pay to win game. Few things that need improvement : Tutorial loads up almost the same for hours for every card mechanic which is terrible and would make prospective players leave (2 of my friends said it's boring to complete and they left the game), it would be better if theres a simple and more interesting UI of compendium making it more accessible and fun to many, META has killed a variety of decks built which is non-existing to games right now.