Heimerdinger vs Senna

Heimerdinger
vs
Not enough games
Senna
Heavy AD damageHeavy pokeHigh burstSustained DPS

Build vs Senna

The champion's reference build, for lack of enough games in this matchup

Recommended items for Heimerdinger: Blackfire Torch, Liandry's Torment, Zhonya's Hourglass, Sorcerer's Shoes, Rabadon's Deathcap, Void Staff, Morellonomicon, Banshee's Veil.

Starting items

Doran's Ring
Health Potion
x2

Core build

Blackfire Torch
1
Liandry's Torment
2
Zhonya's Hourglass
3

Standard

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

Anti CC

Mercury's Treads
4vs CC

Other options

Rabadon's Deathcap
Void Staff
Morellonomicon
Banshee's Veil
Stormsurge

Power Spikes

Strength by game phase

Senna's abilities

Passive, spells and ultimate

Absolution (P)

When units die near Senna, their souls are periodically trapped by the Black Mist. Senna can attack these souls to free them, absorbing the Mist that held them in death. Mist fuels her Relic Cannon's power with increased Attack Damage, Attack Range, and Critical Strike Chance. Attacks from Senna's Relic Cannon take longer to fire, deal bonus damage, and briefly grant her a portion of her target's Move Speed.

Cooldowns

Cooldowns by spell rank

LevelQWER
315s11s26s–
615s11s26s2m20
915s11s26s2m20
1115s11s26s2m
1615s11s23s1m40
1815s11s20s1m40

Playing as Heimerdinger

Tips to maximize your impact

  1. Plant your turrets and stay close

    Place your turrets with H-28 G Evolution Turret (Q) where you want to fight, then stay close: if you move too far away, they deactivate after 8 seconds.

  2. Aim the center of your grenade

    Aim the center of CH-2 Electron Storm Grenade (E) at your target: only enemies in the center are stunned, and hitting a champion fully charges your nearby turrets.

  3. R then W for the kill

    To kill a target, cast UPGRADE!!! (R) then Hextech Micro-Rockets (W): you fire 4 waves of rockets instead of one.

  4. Giant turret for objectives

    For a teamfight or an objective, cast UPGRADE!!! (R) then H-28 G Evolution Turret (Q): the turret lasts 8 seconds, slows, deals area damage and is immune to CC.

Playing against Senna

How to counter and exploit weaknesses

  1. Punish her when she goes for a soul

    Take a trade when she steps up for a soul: each bit of Mist she absorbs with Absolution (passive) gives her AD, attack range and crit.

  2. Spread out if her embrace hits you

    If Last Embrace (W) hits you, move away from your allies: after a short delay, you and nearby allies are rooted.

  3. Target her when she steps up

    If you can engage, target her when she steps up for Piercing Darkness (Q): she has no dash to get away.

  4. Beware the wraiths

    Back off when her team disappears into Curse of the Black Mist (E): her allies are camouflaged there, then fast and unselectable.

Patch 16.21.1