Win rate of each changed hero before and after the update, on every match played. The noise threshold, the largest swing among the 37 heroes this patch did not touch, is 1.65 points.
Celeste (nerf): 52.17% → 51.78% win rate, -0.39 points, within the noise
Every change in this update
Celeste — Dazzling Trick cooldown increased from 32s to 34s (nerf)
Celeste — Dazzling Trick T2 barrier rescaled from "+80 and +0.7 scaling" to "+70 and +0.76" (rework)
Celeste — Dazzling Trick T3 cooldown increased from -18s to -20s (buff)
Celeste — Dazzling Trick T3 reduced from +1.5s Silence to +1.25s (nerf)
Celeste — Radiant Daggers Spirit Amp per stack reduced from +8% to +7% (nerf)
Celeste — Radiant Daggers T3 Spirit Amp per stack increased from +3% to +4% (buff)
Celeste — Shining Wonder bounce range reduced from 17.5m to 16.5m (nerf)
Celeste — Shining Wonder damage reduced from 165 to 140 (nerf)
Celeste — Shining Wonder spirit scaling reduced from 0.9 to 0.6 (nerf)
Celeste — Shining Wonder T2 now also increases spirit scaling by +0.45 (buff)