Summoner got destroyed this patch

[Kevee]

Hidden nerf to Shadow Flare.

It now does the 25 potency as listed instead of the ~35 potency before.

Hitting for 90s-100s pre=patch, now hits for 60s.

[Spellbinder]

Hidden nerf to Shadow Flare.

It now does the 25 potency as listed instead of the ~35 potency before.

Hitting for 90s-100s pre=patch, now hits for 60s.

This was a bug fix. It's just not in the English patch notes yet.

Edit:
From the list of addressed issues.

グラウンドターゲットによるダメージエリア（フレイミングアロー、シャドウフレア）が、常にクリティカルヒットしている。

Ground-targeted attacks (i.e. Flame Arrow and Shadow Flare) always did critical damage.