She’s nerfed to almost nothing but still one of the best supports BECAUSE compared to a Zen you’re not as vulnerable & can heal a lot more in less time. Ana requires perfect accuracy & 500 sleep darts to defend herself if she’s under attack. Etc etc. it’s easiest to be successful on Mercy especially when 90% of the time you’re solo healing anyway. & because of that reason << supports in general should always have high pick rates.