Evelynn is not a great in the early game, so try to get ahead of her by invading her jungle and killing her.
Evelynn is quite fast with clearing her jungle, so she will reach level 6 before your Jungler. Play as safe as you can and try not to give her any kills to prohibit her from snowballing when she reaches this power spike.
Evelynn will try to attack you from the rear and get the jump on you. Ward your surrounding with Control Wards as well as deep wards to spot her before she becomes invisible.
To get a kill on Evelynn, try to play around her
cooldown. When it’s down, she is a lot less mobility and cannot escape as easy without Flash.
Get wards down! Evelynn might be cloaked when walking but not when doing camps. Keep them warded. In addition, when sieging an objective, place a Control Ward down to see her approaching.
Evelynn will look to kill someone before a team fight or an objective. Path around the map accordingly so you won’t get killed by her.
Evelynn’s first power spike is when she reaches level 3 at which she unlocks all 3 of her abilities. She will now have a lot more power for killing and clearing the jungle.
She reaches her second power spike on level 6 and whenever her
off cooldown. She will now have an easier time killing champions and getting out of sticky situations.
Look out for Evelynn’s items as her next power spike comes with Lich Bane which enhances her burst potential.