About Evelynn changes...

Passive - Shadow Walk COOLDOWN ON ENTERING STEALTH 6 seconds ⇒ 6/5/4/3 seconds (at levels 1/6/11/16) W - Dark Frenzy REMOVED: GOTTA GO FAST Spell hits no longer passively grant stacking movement speed NEW: ULTRA RAPID FRENZY Spell hits now lower Dark Frenzy's cooldown by 1 second

These were the Eve's changes from patch 5.6. To Riot's Credit, the lower stealth is a nice thing to have. Being cloaked during a recall or just generally allowing you to activate W without being exposed for too long is valuable.

But, as for the W changes... I think Riot missed the mark here. In context, they want Eve to be stronger in shorter bursts rather than extended fights, and using the lower passive cooldown and new W passive to chunk foes before running away.

However, this doesn't really work in practice. Eve's detection range is 700. Her Q and E are 500 and 300 range. This means that Evelynn usually has to burn Dark Frenzy's cooldown to get in range for her other spells. Dark Frenzy's cooldown is 15 seconds. Later on, that cooldown is going to be shorter of course, but even so, it's still too long to enable the hit and run playstyle riot wants Eve too have. Reducing W's cooldown by 1 second on spell-hits is not enough for it refresh quickly enough for Eve to run away after she engages. If Riot wants to have this playstyle work, more needs to be done. Maybe consider having auto attacks reduce W'S cooldown, or perhaps making spell hits reduce the cooldown by a more significant amount, or maybe decrease W's base cooldown.

And also... Losing that passive movement speed really hurts Eve more than one would think. It allowed her to stick and/or kite without having much CC in her kit, but now she doesn't have it anymore.

Obligatory .

EDIT: Eve's passive movement speed buff has been reapplied on PBE, without taking the cooldown reduction on spell hits away as a bonus. We did it!