Gloomhaven

The Quartermaster is one of the strongest class in the game, to the degree where many consider it gamebreaking. It does this via a focus on items, often making single-use consumed items used many many times per scenarios with its abilities and modifier cards, as well as Reinforced Steel's ability to refresh spent items every single turn. Combined with the stronger items in the game, and it turns an already strong class into an incredible powerhouse.