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Matchup

Heimerdinger
Heimerdinger
20%
80%

vs

50.0%
Rek'Sai
RekSai
80%
20%
Heavy AD damageDive threatCountered by stasisStrong engage

Build vs Rek'Sai

Build adapted to this matchup

Starting items

Doran's Ring
Health Potion
x2

Core build

Dark Seal
1
Blackfire Torch
2Mage
Shadowflame
3vs Tank

Standard

Sorcerer's Shoes
4Magic pen
Liandry's Torment
5Mage tank

Summoner spells

41445%
41235%

Anti AD

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

Anti CC

Mercury's Treads
4vs CC

Anti Tank

Void Staff
5vs Tank
Stormsurge
vs Tank

DPS

Liandry's Torment
Mage tank
Rabadon's Deathcap
Mage
Rylai's Crystal Scepter
Mage tank

Other options

Oblivion Orb
100.0% WR1 games
PrecisionPrecision
ConquerorConqueror
Presence of MindPresence of Mind
Legend: HasteLegend: Haste
Cut DownCut Down
SorcerySorcery
Absolute FocusAbsolute Focus
Gathering StormGathering Storm
Adaptive ForceAdaptive ForceHealth Scaling

Power Spikes

Strength by game phase

Early (0-15)
Mid (15-30)
Late (30+)
HeimerdingerHeimerdinger
RekSaiRek'Sai
Passive
Favorable
Favorable

Rek'Sai's abilities

Passive, spells and ultimate

Fury of the Xer'Sai (P)

Rek'Sai generates Fury by Attacking and hitting with basic Abilities. She consumes this Fury while Burrowed to restore health.

Cooldowns

Cooldowns by spell rank

LevelQWER
34s4s6s–
63s4s6s2m
92s4s6s2m
112s4s6s1m40
162s4s6s1m20
182s4s6s1m20

Playing against Rek'Sai

How to counter and exploit weaknesses

1

Destroy her tunnels when you find them — each tunnel is a passage she can reuse to escape or engage.

2

Her knockup (W) has short range: she must be very close to knock you up.

3

Rek'Sai is strong in the early game: respect her ganks with tremorsense. Play safe.

4

Her R makes her visible and she dashes in a straight line: a well-placed CC stops her.

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