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Senna Build Guide by HypoTheAced

Support Multitask Senna build [s12] (matchups, tips, items...)

Support Multitask Senna build [s12] (matchups, tips, items...)

Updated on June 17, 2022
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League of Legends Build Guide Author HypoTheAced Build Guide By HypoTheAced 58 4 189,601 Views 3 Comments
58 4 189,601 Views 3 Comments League of Legends Build Guide Author HypoTheAced Senna Build Guide By HypoTheAced Updated on June 17, 2022
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Runes: Fleet Footwork

1 2
Fleet Footwork
Presence of Mind
Legend: Alacrity
Coup de Grace

Biscuit Delivery
Approach Velocity

+10% Attack Speed
+9 Adaptive (5.4 AD or 9 AP)
+6 Armor


1 2 3
Go-to spells (support)
LoL Summoner Spell: Barrier


LoL Summoner Spell: Flash


Threats & Synergies

Threats Synergies
Extreme Major Even Minor Tiny
Show All
None Low Ok Strong Ideal
Extreme Threats
Ideal Synergies
Ideal Strong Ok Low None

Champion Build Guide

Multitask Senna build [s12] (matchups, tips, items...)

By HypoTheAced
Hey y'all, this is a build that I came up with for Senna (it can work for ADC Senna too, but it's mainly for Support Senna). I feel like there is potential for this build and it has been performing well in my games, so don't be afraid to give it a try and let me know your thoughts! :)

For those wondering, the name came from all the different passives and stats this build gives Senna. She's doing it all at once - multitasking :D

Note: This build may get updated here and there if there are any changes to the items, runes, or the champion itself.

Item Sequence

Serrated Dirk 1100

Serrated Dirk

You want to get this item as quick as you can. Serrated Dirk just gives you that big powerspike for laning phase, that can sometimes be harder for Senna (since she thrives more mid-late game). It synergizes well with healing on her Piercing Darkness scaling with (+ 40% bonus AD) (+ 40% AP) (+ 160% Lethality) and raw damage input to dominate the lane.
1st/2nd ITEM

Item Sequence

Wit's End 3100

Wit's End

(We can finish Eclipse or Duskblade of Draktharr after or before this item. It's up to your playstyle).

Your second powerspike is Wit's End. Some of you may ask why that specific item? To answer that question, it simply gives a lot of valuable stats to Senna for only 3100 gold. That includes level scaling on-hit AP dmg (procs through Piercing Darkness as well since it applies on-hit effects) with 40 Magic Resist, large amount of Attack Speed (40%), as well 40 AD and lastly 20 movement speed for 2 seconds for any unit hit (procs on Q as well), giving her amazing kiting potential while dealing a lot of dmg with a bonus of having MR against bursty mages or even AP assasins that any Senna player struggles against.
2nd/1st ITEM

Item Sequence

Eclipse 3100


Our mythic option is going to be a lethality mythic that is pretty common for Senna called Eclipse. It synergizes well with Senna's kit as a whole, especially her Piercing Darkness healing that scales off of the 18 Lethality it provides. Together with 55 AD it also gives us 7% Omni Vamp that helps Senna get even more sustain she needs.

Now we are getting to the passive, that's more complicated so let me just provide you with the whole text here: "Hitting an enemy champion with 2 separate attacks or abilities within 1.5 seconds deals them 6% of target's maximum health as bonus physical damage and grants you 15% bonus movement speed and a Hybrid resistances shield for (Melee 180 / Ranged 90) (+ (Melee 40% / Ranged 20%) bonus AD) for 2 seconds."

Last but not least it's mythic passive gives us bonus 4% Armor Penetration for every legendary item, which is good if the enemy team has 1 or 2 tanks.

(If versing more tanky team [3 and more], I suggest going Divine Sunderer.)

Item Sequence

Duskblade of Draktharr 3100

Duskblade of Draktharr

If there is a situation where the enemy team is squishy, or has no more than 1 tank you should/could (preference) build Duskblade. The raw power this item provides is amazing, especially early game when Senna really struggles. With the 60 AD, 18 Lethality and 20 Ability Haste it's a great mythic to pick up for more of a "one shot, one kill" kind of strategy.

This mythic is not only good because of the ability haste and big AD, but also because of the damage on the item passive: "Your next basic attack against an enemy champion deals (75 for Melee / 55 for Ranged) + (30% for Melee / 25% for Ranged) bonus attack damage)". Unlike Eclipse, it takes only one auto attack or one Q Piercing Darkness hit on the enemy to proc the passive. It's a great way to harras the enemy in the lane with Senna's long range. The bonus AD on-hit can also infinitely scale thanks to our passive Absolution, where we get AD for collecting souls.

What's also unnoticable is the invisibility passive of this item (read in item description). This is a great way to escape messy fights and save your relatively squishy self, or even surprise another enemy from a different angle.

Note: With the new Senna buffs since patch 12.2. (she gets a 20% slow on Q Piercing Darkness, scaling with AD) these 2 mythic items may be the most suitable ones for her. As mentioned above, the lethality healing for our Q we get from them is already really good, and now with the AD scaling slow it's going to be even better (especially Duskblade of Draktharr).
3rd ITEM

Item Sequence

Guinsoo's Rageblade 2600

Guinsoo's Rageblade

This is our third item and here's why. In most of Senna's builds you will see this item, but for those who may not know why heres a quick rundown: "Senna's critical strikes deal 8.5% less damage" (written in her passive Absolution) - meaning she can't utilize crit well. By going Rageblade we convert the crit into on-hit AD (1% crit = 2 AD), counting crit from her passive Absolution too (10% crit for every 20 souls collected).

This item gives you a lot of Attack speed (45 %) as well with 20% crit. As we build more of our items, we get more crit from them to stack our Rageblade (for example Guinsoo's Rageblade itself, Lord Dominik's Regards or Mortal Reminder and our passive as the game progresses...).

What's also a big plus is that this item synergizes really great with Wit's End because of it's second passive: "Every 3rd auto attack aplies ALL ON-HIT effects TWICE." Meaning your Wit's End bonus on-hit AP dmg is gonna be applied twice, dealing even more damage.
4th ITEM

Item Sequence

Lord Dominik's Regards 3000

Lord Dominik's Regards

Last but not least our 4th item options are Lord Dominik's Regards or Mortal Reminder. Why this item on Senna? If we read Senna's Absolution passive, we can see this: "If Senna applies Mist to the same target twice, she collects it, dealing 1% − 10% (based on level) of target's current health as bonus physical damage." (maximum 10% reached at level 10)

Senna basicaly has bruiser built in her kit, scaling with level. Going LDR in our build gives us except the 30 AD, with 20% crit (for our Guinsoo's Rageblade) also 30% Armor Penetration with a 15% bonus health damage against enemies with more health that you passive. This synergizes well with Senna's passive as the game goes on. I put this item 4th because of the late game scaling for Senna's Absolution passive and because in many scenarios the enemy team will have more HP than Senna herself.

Item Sequence

Mortal Reminder 2500

Mortal Reminder

As our situational 4th item we can take Mortal Reminder. This item helps out tremendiously against enemy teams that have a lot of healing.

It will give us 20% Crit, 25 AD, Attack Speed (25%) and as well Movement Speed (7%) with of course the intended reason of us building it - Antiheal. (+ it can be procced by Piercing Darkness).

It may even be a good idea to buy only Executioner's Calling early against healing botlane matchups ( Soraka, Yuumi, Samira, Nami...) and continuing building your other more important items instead of instantly buying Mortal Reminder as a whole. This gives us the antiheal needed for laning phase without needing the full item and finish it sometime later.
Late Game - 5th ITEM (replace for starter item)
(note: only sell your support item for these items if you can buy it at ONCE - it's not worth selling it only for a part).

Item Sequence

Spirit Visage 2900

Spirit Visage

If you get to late-game and you are already full build one fo your 5th item options should be either Spirit Visage or Guardian Angel. These items will be a replacement for your support item Black Mist Scythe.

As we all know ADCs and squishy champions late-game have a hard time surviving without any peel. That's why going this item as very last is a really good choice. For 2900 gold it sustains us with 450 HP, 100% Base HP Regeneration with 10 Ability Haste and 40 Magic Resistance.

We wanna go this item if the enemy team is mostly consisting of AP damage [ 3 AP champs and more ].

Spirit Visage also has a really profitable passive: "Increases all healing and shielding received by 25%". You can use this well together with Eclipse Omni Vamp and Shield passive proc.

Later in game, where Senna shines the most, this definitely becomes usefull since it synergizes well with our kit. As mentioned above for the small price we get a lot of valuable stats that will help us survive in the crazy state of late game.

Item Sequence

Guardian Angel 2800

Guardian Angel

Our other option to replace the warding item is Guardian Angel. For those who don't know what it does, after few seconds you die it basicaly revives you with some percentage of your health and mana.

The revive option is on a very long cooldown (without item haste 5 mins), so be prepared to only use it once, if lucky more times, since it's late game and everything depends one teamfight/good pick.
This item gives us 40 AD and 40 Armor, so basicaly it makes us more tanky giving us slightly bigger chance of survival later in game. It significanly helps against extreme poke/burst team since you can be oneshot even from distance as an ADC champion and get a second chance.

I would advise getting this item if the enemy team is mostly consisting of AD damage [ 3 AD champs or more ].

You should get these items especially if your team doesn't provide any peel for you in form of tanks/bruisers or even assasins that can distract the enemy team long enough for you to finish them off from distance.

Item Sequence

Boots of Swiftness 900

As for boots, most Senna players preffer Boots of Swiftness which give 60 Movement Speed + 20% Slow Resist that helps against slows (best example laning against Ashe) and with kiting.

These boots are better in games where the gold income isn't as great, or as a situational item mentioned above why. However if we are talking about the movement speed we already have Wit's End, that gives us a lot of that bonus movement speed on-hit.

Item Sequence

Plated Steelcaps 1100

I prefer to go in most cases Plateled Steelcaps with benefits such as 20 Armor, 45 Movement Speed + Damage taken reduced by 12%.

These boots are little more expensive compared to Boots of Swiftness, but much more worth it in my oppinion as for the laning phase against early game ADCs ( Tristana, Jhin, Draven, Miss Fortune...), AD Supports ( Pyke...) or both and most importantly good against ASSASINS since assasin = lethality - which is just flat armor penetration (1 lethality negates 1 armor) . Additionaly, they give us little of that tankyness for the mid-late game that goes well with our MR from Wit's End.

Item Sequence

Mercury's Treads 1100

If there is ever a situation where the enemy team has a lot of CC (Stuns, Charms, Fears, Polymorph, Taunts, Blinds, Silences) there is an option to go for Mercurys Treads, that give us that needed 30% Tenacity together with 25 MR and 45 MS.
GENERAL TIPS (support Senna)
  • Don't roam with Senna. Since you don't get AD with levels, you need soul stacks from lane. Use your global ultimate Dawning Shadow to help out other lanes. This doesn't include helping your jungler with dragons or rotating to help with a fight in the river.
  • After you get Serrated Dirk you can poke much more, no matter the matchup. However try hiding behind minions as much as you can against hook supports.
  • Take the kills if you can, don't let your team flame you if you do so. You can snowball with them as much (if not more) as your ADC.
  • If versing tank supports, try getting your support item stacks and souls from poking them instead of the ADC. They have to walk up to the minions for their support item, giving you a space to punish them.
  • If versing a mage/enchanter support try poking the ADC for your souls and support item through your Q preferably.
  • Try learning ward + Q trick for either poking or even killing a low HP enemy that would escape. It can also help if you yourself are low HP and there are no units to Q through.
  • It's good to build Umbral Glaive if the enemy team places a lot of wards/pink wards to clear them faster, since the attack speed early game is too slow.
  • When you and your team are taking a turret, or killing a dragon/baron, align your Q Piercing Darkness so that it heals your allies and damages the target at the same time for the maximum effect.

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