Matchup

Leblanc
Leblanc
9%
91%

vs

45.1%

over 1491 games

Vex
Vex
0%
100%
Heavy AP damageHigh burstStrong engageCountered by spell shield

Skill matchup

Build vs Vex

Build adapted to this matchup

Starting items

Doran's Ring
Health Potion
x2

Core build

Dark Seal
1
Luden's Echo
2Mage
Shadowflame
3vs Tank

Standard

Sorcerer's Shoes
4Magic pen
Rabadon's Deathcap
5Mage

Summoner spells

41481%
41217%

Anti AD

Plated Steelcaps
4vs AD
Zhonya's Hourglass
5vs AD

Anti Heal

Morellonomicon
6vs Heal

Anti AP

Mercury's Treads
4vs CC
Banshee's Veil
5vs AP

Anti Tank

Stormsurge
5vs Tank
Void Staff
vs Tank
Cryptbloom
vs Tank
Voltaic Cyclosword
vs Tank

DPS

Rabadon's Deathcap
Mage
Malignance
Mage
Hextech Rocketbelt
Mage tank
Statikk Shiv
DPS
Hextech Gunblade
Mage
Blackfire Torch
Mage
Cosmic Drive
Mage tank
Liandry's Torment
Mage tank
Lich Bane
Mage
Horizon Focus
Mage
Trinity Force
DPS
Stormrazor
DPS

Other options

Mejai's Soulstealer
84.6% WR13 games
DominationDomination
ElectrocuteElectrocute
Sudden ImpactSudden Impact
Grisly MementosGrisly Mementos
Relentless HunterRelentless Hunter
SorcerySorcery
TranscendenceTranscendence
Gathering StormGathering Storm
Adaptive ForceAdaptive ForceHealth Scaling

Power Spikes

Strength by game phase

Early (0-15)
Mid (15-30)
Late (30+)
LeblancLeblanc
VexVex
Aggressive
Careful
Careful

Vex's abilities

Passive, spells and ultimate

Doom 'n Gloom (P)

Vex periodically becomes empowered, causing her next basic Ability to fear enemies and interrupt dashes. Whenever a nearby enemy dashes, Vex applies a mark that can be consumed for bonus damage that also reduces the cooldown of her empowered state.

Cooldowns

Cooldowns by spell rank

LevelQWER
38s16s13s
66s16s13s2m20
94s15s13s2m20
114s14s13s2m
164s12s13s1m40
184s12s13s1m40

Playing against Vex

How to counter and exploit weaknesses

1

Vex is weak against champions WITHOUT dashes: her anti-dash passive doesn't proc if you don't dash.

2

Her R is a skillshot: dodge the missile and she can't dash to you.

3

Punish her when her fear passive is on cooldown (the indicator below her is grayed out when unavailable).

4

Long-range champions without mobility (Xerath, Vel'Koz) counter her well.

Source: op.gg + LTL Engine · Patch 16.9.1 · May 9, 2026