

The best counters to Leona in Master+ coordinated 5v5 games as Support are Milio (57.4% win rate, 383 games), Senna (57.2% win rate, 146 games) and Soraka (56.4% win rate, 207 games). These picks are the strongest observed answers to Leona in the current sample. Each win rate is that counter's result versus Leona in coordinated team games, not a Solo Queue lane stat.
The best calculated counters to Leona in Master+ coordinated 5v5 are Milio (57.4% win rate, 383 games), Senna (57.2% win rate, 146 games) and Soraka (56.4% win rate, 207 games).
Leona has a 51.2% win rate across 12,942 Master+ coordinated 5v5 games as Support. That sample is Flex 5 and Ranked 5v5 team play, not Solo Queue.
draft-meta-latest · Public draft-meta aggregate from benchmark JSONL matches with source-tier weighting and patch recency weights.
Draft-meta and champion-coordinated rows use different populations. Do not merge sample counts or treat pairwise synergies as a measured 5-man shell.