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Matchup

Sion
Sion
63%
37%

vs

50.0%
Vex
Vex
0%
100%
Heavy AP damageHigh burstStrong engageCountered by spell shield

Build vs Vex

Build adapted to this matchup

Starting items

Doran's Shield
Health Potion

Core build

Kaenic Rookern
1vs AP
Unending Despair
2vs AD
Jak'Sho, The Protean
3vs Hybride

Standard

Boots of Swiftness
4vs Slow
Hollow Radiance
5vs AP

Summoner spells

41273%
61227%

Anti AD

Plated Steelcaps
4vs AD
Sunfire Aegis
5vs AD
Randuin's Omen
vs AD

Anti Heal

Thornmail
6vs Hybride

Anti AP

Mercury's Treads
4vs CC
Hollow Radiance
5vs AP

DPS

Titanic Hydra
Bruiser

Other options

Overlord's Bloodmail
HP
100.0% WR1 games
ResolveResolve
Grasp of the UndyingGrasp of the Undying
DemolishDemolish
ConditioningConditioning
OvergrowthOvergrowth
PrecisionPrecision
Legend: HasteLegend: Haste
TriumphTriumph
Attack SpeedAdaptive ForceHealth Scaling

Power Spikes

Strength by game phase

Early (0-15)
Mid (15-30)
Late (30+)
SionSion
VexVex
Neutral
Neutral
Neutral

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