[Evelynn Idea Rework W + Passive]
P: After being out of combat for X seconds, if Evelynn is standing near a wall, she blends in with the wall. As long as she is not damaged, deals damage, or leaves the wall she will stay stealthed. If she moves from one wall to another she will have a 2.65 second transfer time to restealth.
Additionally, whenever Evelynn leaves stealth she gains Night Crawler. If Eveylnn has Night Crawler buff her next spell will charm an enemy for 1 second.
W: If Evelynn is stealthed through her passive effect she passes through to the other side of the wall.
If She is not stealthed she gains a burst of movement speed while cleansing slows.
Part of this new passive is to give her more of a "hiding in the shadows" feel. Stealth never felt like stealth unless it was magic because you could stand in the middle of lane and IRL you need shadows or corners, etc. to hide. This passive also gives more counterplay because if you stay away from walls you'll get a headstart on your escape.
It also gives some actual synergy in her kit.