1 out of 3 chance to spin and upgrade strain, but the game screws you and never lets you land where you need to. The least valuable resources like vases are the hardest to get. Honestly just rediculous, i love the theme, but if you get invested in this game you'll just find youself disappointed because seems like they litterally coded the game to hold u back. If you spin a wheel with 3 equal sized sides. It should not take 40 plus spins and spending all these diomands upgrade strain. Rediculous