Among the most substantial change is to her passive, as she is no longer always invisible from Level 1. Instead she is enveloped in a “Demon Shade” after being out of combat for a few seconds. When she enters into that state while her health is low, her health will be recovered at a faster rate. From Level 6 onward, being enveloped in the Demon Shade will place her into camouflage, making her invisible to everything except nearby enemy champions, control wards, or enemy turrets. Entering combat will break her Demon Shade and her camouflage.
Her new Q, Hate Spike, is a modified version of her old one. Evelynn shoots a skill shot in a direction, dealing damage to the first enemy unit it hits. When the Q finds a target, the next three spells or auto-attacks deal more damage. When she hits a monster, a chunk of the cooldown time is refunded immediately. After the initial skill shot, she can then cast Hate Spike up to three times, which fires a line of spikes through the nearest enemy, dealing damage to all enemies in the area. The Hate Spikes will prioritize the enemy targets that Evelynn is attacking.
Her W, Lust Dust, is new. Evelynn can curse an enemy champion or monster, revealing her location to her target. When she hits the cursed enemy with her abilities or basic attacks, it expunges the curse, giving her a mana refund and slowing the target. When the curse is allowed to linger for a couple of seconds and then expunged, the target is charmed and moves toward Evelynn. If the target is an enemy champion, their magic resistance will drop, and if the target is a monster, the length of the charm increases, as does the ability’s damage. Casting Lust Dust doesn’t break Evelynn’s camouflage.
Her E, Whiplash, has two forms. It allows Evelynn applying on-hit effects, dealing damage to an enemy unit as a percentage of the target’s maximum health and giving her a boost in movement speed. When entering into Demon Shade, the ability is empowered, pulling Evelynn toward her target before dealing damage to them and all nearby enemies.
Her ultimate, Widowmaker, makes Evelynn briefly untargetable, dealing damage in a half-circle area in front of her, and then warps it backwards away from the damage she just dealt. The ultimate does bonus damage to low-health enemies.
Once a popular jungler with permanent-stealth, the new Evelynn seems to keep her status as a sneaky jungler with the ability to catch enemies off guard, at least after Level 6. Although she doesn’t have ability to increase her movement speed on command anymore, she has a way to apply crowd control to her enemies, somewhat maintaining her status as a ganking jungler.
Her new ultimate is the most interesting, as she is not the all-in burst damage jungler, but now more of a hit-and-run style of assassin. She could also presumably use the ability to disengage, moving over walls and putting more distance between her and the fight.