The Brilliant Reversal Indicator MT5 is a popular and free Forex indicator that is useful for traders looking to enter and exit the markets. It works by calculating the price action of the last few bars and then comparing it to the overall trend of the market. When the indicator finds that the price action is diverging from the trend, it can indicate a potential reversal. It is also popular among traders due to its ability to generate signals in real-time and its free availability.