Diana

Diana is an AP assassin in the mid, and on patch 16.17 they grade out as a strong pick — a 52.3% win rate, 3.0% pick rate, 35,379 ranked games sampled. On the power curve, Diana spikes hardest in the mid game around the two-to-three-item mark — that is the window to force fights and objectives.

How Diana wins: grouped 5-v-5 teamfights, where Diana tips the fight, and landing engage and starting fights on Diana's terms. The kit grades 9/10 teamfighting, 8/10 engage, 7/10 waveclear. Diana grades low on split-push and siege (3/10, 2/10), so don't take fights that turn on those dimensions.

The most-played core build is Stormsurge, Shadowflame, Zhonya's Hourglass, which holds a 53.5% win rate across 3,890 games this patch. Pick the enemy team to adapt each item slot to the specific matchup.

The matchup to respect is Yasuo, where Diana sits at just 42.9%, the lane swings the other way into Varus (59.0%), and on the team side, Diana gains the most from a Poppy (+16.5% pair win rate).