"I've got a long list of ex-lovers who will tell you I'm quite insane."
Attacking and Moving
While it wasn't intentional that Eury has Atomic Poison Ivy's ultimate, upon seeing her champion spotlight I found how I want Eury to move and attack.
Eury is carried around the battlefield by her hair in an insect-like manner, with a crude similarity to Urgot or Priscilla.
Eury attacks with whips of her hair - the same hair that she otherwise walks on.
Innate: Eury's basic attacks, Hairwhip and Pirouette will charm enemies below 50% of their maximum health for a short duration. This cannot happen again for some seconds.
Active: Eury's lashes her hair in the target direction, dealing magic damage to all enemies in a line and slowing them for a short duration. Enemies caught by the tip are also disarmed for the duration.
Active: Eury promises to spare the target allied champion from the next hostile spell to strike them in the next 3 seconds. If a spell is blocked, Eury will manifest at their location.
Active: Eury pirouettes forward a short distance, damaging surrounding enemies and gaining 100% dodge chance during the dance. Eury can activate the ability a second and third time within 3 seconds of each other.
Active: Eury pirouettes forward a short distance, damaging surrounding enemies as well as shattering projectiles hit during the dance.
The intent for Eury's ultimate is engaging, disengaging, repositioning and counter-engaging (with the pseudo-untargetability). However, given how the enemy can see when Manipulate is active, she doesn't really have the ability to bluff/deceive enemies (short of using the ability with little-to-no-gain) - and I'm not sure if I like that. I almost want enemies to not know when her ultimate is active, so she can use the ability as a "stealth" tool.
Active: Eury shrouds the area surrounding her in a disorientating haze for a few seconds. Allies within the haze are stealthed, but she remains visible. Dealing damage will remove stealth for 0.65 seconds.
So that she may be the centre of her enemies' attention.
Passive: Eury covers the surrounding area in a rosey haze. This passive is not available while the ability is on cooldown, but will linger for the duration of the active.
Active: Eury grants stealth to allied champions within the haze so that she may be the centre of her enemies' attention. Dealing damage will remove stealth for 0.65 seconds.
To clarify, Eury is not stealthed by this effect - nor does she gain any direct benefits from the active.
Eury's name derives from Euryale, one of the three gorgons in Greek mythology.
It is phonetically similar to Fury, which complements her theme of a scorned woman.
While Jinx has referred to Eury's hair as "boring", this is evidently out of jealousy (retroactively, at least, I cannot speak for how boring Jinx's sister's hair was going to be).