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Senna Build Guide by DatKawaiiBunny

Support [10.10] ♥ DatKawaiiBunny's Senna Support/ADC Guide

By DatKawaiiBunny | Updated on May 27, 2020
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Choose Champion Build:

  • LoL Champion: Senna
    Senna Support
  • LoL Champion: Senna
    Senna ADC

Runes: Glacial Augment

1 2 3 4
Glacial Augment
Magical Footwear
Biscuit Delivery
Cosmic Insight

Presence of Mind
Legend: Bloodline

+9 Adaptive (5.4 AD or 9 AP)
+9 Adaptive (5.4 AD or 9 AP)
+6 Armor


1 2
LoL Summoner Spell: Flash


LoL Summoner Spell: Ignite


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Support Role
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Support Role
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Champion Build Guide

[10.10] ♥ DatKawaiiBunny's Senna Support/ADC Guide

By DatKawaiiBunny

Welcome to my Senna support guide! My name is DatKawaiiBunny, and I'm a Silver IV ADC & support main. I've been playing since season 7. I started playing Senna when she first came out. She's been nerfed and buffed after her release. She's actually getting nerfed for ADC. I started playing her again because she hasn't been getting banned. She's pretty powerful as support. She needs to be played aggressively though. Even though this is a support guide, I added some ADC runes to the build.

Even though she's been getting nerfed, she's still a great choice. Her global ultimate Dawning Shadow is the best way to get low health enemies and it gives your allies a big shield. Her root is still really good, and she has a lot of poke. Our girl is coming out with a High Noon skin in the patch 10.12! I will be playing her more. I will finally be adding gameplay tips soon, so stay tuned! Also, if you want to take Resolve with Glacial Augment, I have Resolve runes in the rune chapter!

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♥ Global AOE Ultimate

♥ A Good Root

♥ Camouflage

♥ Reduced Cooldown on Piercing Darkness

Senna so far is a pretty good support champion. Her ultimate Dawning Shadow is a global AOE that shields allies, while damaging enemies that are in the center. Her heals with Piercing Darkness are good, but that's towards mid-game. Also with Piercing Darkness, her cooldowns are reduced by 1 second when she uses auto attacks and it's not like Prismatic Barrier where it's a skill shot. It, I guess auto-locks onto a target like Lightslinger. She can also camouflage allies with Curse of the Black Mist.

♥ Long Cooldown on Dawning Shadow

♥ Weak Heal Early

♥ High Cooldowns Early

♥ Slow Auto-Attacks

♥ Squishy

Senna has some high cooldowns, especially on her ultimate Dawning Shadow. Her heal is quite powerful mid-late game, but it heals for about 40 at level 1. Champions like Nami have a better heal early, but it cost more. Because of her passive Absolution her auto-attacks are slow, so you can deal extra damage. Senna is also pretty squishy hence why I think taking Bone Plating is good.

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Summon Aery
Summon Aery both shields and damages. When you use a heal or shield on an ally, it grants a 35 - 80 (based on level) (+ 25% AP) or (+ 40% bonus AD) shield. Your attacks also send Summon Aery to the targeted ally or enemy. This is a good rune for Senna because it gives her extra poke damage. You could also take Arcane Comet. When you hit an enemy with an ability, it hurls a comet towards them dealing 30 - 100 (based on level) (+ 20% AP) (+ 35% bonus AD).

Manaflow Band
Manaflow Band gives you 25 mana every time you hit an enemy champion with an ability. It also gives you up to 250 mana. Senna uses up a lot of mana because of her Q and W, so this is the best rune to take.

Transcendence grants you 10% CDR, which means more heals, and a shorter cooldown for your ult. Another great thing about this rune is once you get full CDR through items it will take the extra CDR and turn it into AP or AD. Senna has a long cooldown with her ultimate and her W. If you want more CDR, take Cosmic Insight if you go inspiration second, or Ultimate Hunter if you go domination.

Gathering Storm
Every 10 minutes, you gain 8 AP or 5 AD. It is adaptable for every champion. You can also take Scorch for extra poke. When you hit an enemy with an ability, it burns them with extra damage. It deals 10-30 bonus magic damage, based on level. You can also take Scorch for the extra poke damage. It deals 15 - 35 bonus magic damage based on level, but I highly recommend taking this rune.

Coup De Grace
When an enemy is below 40% health, you deal 8% more damage to them. This can combo nicely with her Dawning Shadow. You can also build Overheal for the 20 - 100% (at levels 1 - 18) shield when you get healed. It lasts for 6 seconds, and it slowly decays 2.5% of the max shield value each second.

Presence of Mind
Senna can use up mana because of her Q and W. When you kill an enemy or get an assist, you gain 20% of your maximum mana and it increases your mana by 100 (up to 500).

Revitalize increases outgoing and incoming shields by 5%. If a target is below 40% health, the heals and shields will be increased by an additional 10%. This will increase the healing from Piercing Darkness. This also comes in handy if you decide to go a hybrid build.

Bone Plating
After taking damage from an enemy, their next three auto-attacks or abilities will deal 30-60 less damage. I've noticed that Senna is a little squishy, so having this rune when you might get out poked is good. You can also take Second Wind. For 10 seconds, you heal for 4% of your health.

Glacial Augment
Glacial Augment is the main rune you want to take on Senna. When you auto-attack an enemy, they're slowed by 30% - 40% (at level 1 - 18) for 2 seconds. I also suggest trying Prototype: Omnistone. It's a fun rune and it works well with Senna, but Glacial Augment is better.

Magical Footwear
At 12 minutes, you gain a pair of Slightly Magical Boots. When you build the final pair of boots, you gain +10 Movement Speed. This rune helps you spend a lot of money on boots. You could also get Perfect Timing for the stopwatch.

Biscuit Delivery
Biscuit Delivery is handy to take on Senna. It restores 10% of your missing mana and health for 15 seconds. It also increases your mana cap by 50. You get 3 biscuits in total. 1 every 2 minutes.

Cosmic Insight
Cosmic Insight gives you a lot of Cooldown reduction. +5% CDR, +5% max CDR, +5% summoner spell CDR, and +5% item CDR. This rune is great for mid to late game. Senna has a lot of early game cooldowns, so this is the best rune to take on her.

legend: Bloodline
When you get a stack, you gain 0.6% life steal. You get a max of 20 stacks. You obtain stacks from points. You need 20 points for 1 stack. 20 points for champion takedowns, 20 points for epic monster takedowns, 5 points for monster takedowns, and 1 for minion kills. This is the best rune to take on Senna. Legend: Alacrity isn't the best to take. You could also take Coup de Grace for the extra damage to enemies that are below 40% health.

Presence of Mind
Senna can use up mana because of her Q and W. When you kill an enemy or get an assist, you gain 20% of your maximum mana and it increases your mana by 100 (up to 500).

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Ability Sequence
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

♥ Passive: Absolution

When an enemy dies near Senna, a soul is left over. She can attack the soul, which will then increase the power of her relic cannon with increased attack damage, attack range, and critical strike chance. Auto attacks and abilities apply mist on an enemy unit for 4 seconds. The next auto attack or ability deals 1 − 16% of the target's current health in bonus physical damage (at level 1 - 11). The drop chance of souls is 25% on minions Senna doesn't kill and 1.67% on cannon minions Senna kills.

♥ Piercing Darkness

Senna fires a beam of light through a target. It heals allies within the beam for 40 / 60 / 80 / 100 / 120 (+AP) (+4 AD) and damages enemies that are hit for 40 / 70 / 100 / 130 / 160 (+25%)(+4 AD). Auto attacks reduces the cooldown of Piercing Darkness.

♥ Last Embrace

Senna throws out a projectile, hitting the first target hit for 70 / 115 / 160 / 205 / 250 (+0.7% AD). After a second, it roots the target and other nearby enemies for 1.25 seconds. The duration increases by.25 seconds when leveled.

♥ Curse of the Black Mist

Senna turns into a cloud of mist for 6 seconds and becomes a wraith. Allies that enter the mist are camouflaged. When they leave the mist, they become wraiths, which gain 20% movement speeds. Wraiths are unselectable and their identities are hidden unless an enemy champion is nearby. The duration is increased by .5 seconds when leveled.

♥ Dawning Shadow

Senna fires a global beam. Enemies hit in the center are hit with 250 / 375 / 500 (+1.0 per bonus attack damage) (+50% of ability power). Ally champions on either side of the beam gain a shield, which allows them to absorb 120 / 160 / 200 (+40% of ability power). The shield's power scales based on the amount of mist Senna has collected.

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  • If you want to increase your healing on Piercing Darkness then take Ardent Censer. It increases your heals and shields by 10%. It provides 60 AP, 50% base mana regeneration, and 10% cooldown reduction. Senna is more of a damage support, but this makes a great second or third item.
  • Redemption grants a 10% bonus on healing and shielding. Redemption gives 10% cooldown reduction, 200 health, 50% base health regeneration, and 150% base mana regeneration. It has a unique activation. "Target an area within 5500 range. After 2.5 seconds, call down a beam of light to heal allies for 30 - 370 (based on target's level) and deal 10% of maximum health true damage to enemy champions and 250 true damage to minions (120-second cooldown). Can be used while dead." This is a good late-game item for Senna. I sometimes build this as a situational third item.
  • Locket of the Iron Solari is an optional/situational magic resistance item that also gives you extra armor. You get 30 armor and 60 magic resistance. When you activate the item, you and your nearby allies get a 130 - 300 (+20% of the caster's bonus health) shield. Also, if Locket of the Iron Solari is cast on the same target within 20 seconds, the cooldown will be reduced by 75%. Another item for fed AP champions, or if there's a lot of crowd control.
  • Athene's Unholy Grail gives 30 ap, 10% cooldown reduction, 30 magic resistance, and 100% base mana regeneration. When you damage an enemy champion, you gain Blood Charges, and you can get 100-250 max. When you heal an ally, it consumes the charges. There's another passive for Athene's Unholy Grail "Dissonance: Grants 5 ability power for every +25% base mana regen. Disables Harmony on your other items." I run Athene's Unholy Grail against fed AP champions. It's not a bad item to build second instead of Ardent Censer. It adds a lot to her heal on Piercing Darkness and a lot on her shield Dawning Shadow.
  • Umbral Glaive gives 50 AD, 10% CRD, and +12 lethality. When you're spotted by an enemy ward, it reveals the ward and traps. You can instantly kill all wards and traps when the passive is up. I've been building this item first instead of Youmuu's Ghostblade. I think this is the new core item for Senna. Her auto attacks with her relic cannon will do more damage, along with her Piercing Darkness. It's far by one of the best first items, and it goes great against champions with armor. You can still build [[YOUMUU'S GHOSTBLADE] for the speed passive, and it gives you 18+ lethality, 10% CDR, and 55 AD.
  • Essence Reaver is another core damage item for Senna. It gives 70 AD and a 25% critical strike chance. With the passive, you get 20% cooldown reduction, which will help reduce the cooldown on your ultimate, and your basic attacks will restore 1.5% of your missing mana.
  • Guardian Angel gives you 40 AD and 40 armor. When you take lethal damage, you restore 50% of your base health and 30% mana for 4 seconds. When you die, you resurrect. If you're very aggressive, then Guardian Angel is the item you want to go. It's a good situational third or fourth item.

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These are the places I usually ward. Some factors change my warding, like ocean dragon or if we're losing.
Blue Dots are of course the Blue Team.
Red Dots are of course the Blue Team.
White Dots are Control Wards.

This is my early game warding for blue team.

    I usually use my control ward for Baron, Dragon and Rift Herald. I put a control ward in the bush near the wall or in the triangle bush. I sometimes put it in the middle bush, but it depends.
    I focus on warding the river and bushes in the bot lane.

This is my Mid-Late game warding for the blue team.

    I still ward the objectives with the control ward.
    I focus on warding deep into their jungle and in our jungle.

This is my early game warding for the red team.

    Just like the blue team warding, I use a similar method. I ward the objectives Baron, Dragon and Rift Herald. I focus on warding the river, triangle bush, and in the lane. I also ward the bush near the dragon, or near the blast cone.

This is my Mid-Late game warding for the red team.

    I still ward the objectives with the control ward.
    I also ward deep into their jungle and around the objectives.

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Flash teleports your champion wherever your cursor is. Plus, it's a key summoner spell for every champion, except Yuumi. Senna has an escape with her Curse of the Black Mist, but it has a long cooldown. Flash provides her with another escape.

Ignite deals damage 70-410 true damage on a targeted enemy champion for 5 seconds, and applies grievous wounds, which reduces all healing received and regeneration rates by 40%. Ignite helps in teamfights, and with champions that heal like Dr. Mundo and Vladimir. This is the best spell to take on Senna. It gives her a lot of kill potential in the early laning phase. You can also use it in teamfights.

Exhaust slows down a targeted enemy champion for 30% of their movement speed, and reduces their damage by 40% for 2.5 seconds. This spell makes it easier for you to root enemies with Last Embrace.

More supports have been taking Barrier. Barrier shields your character for 95 + (20 per level) for 2 seconds. It helps since Senna is a little squishy, and it goes well with Resolve runes!

♥ I would like to thank everyone for reading and voting for my Senna guide! I hope my guide helped you along your journey. I try to make them simple so it can help a wide range of people. Guides are always updated at the start of the new patch and throughout the month. I love answering questions and helping people, so feel free to ask as many questions as you want! Also, feel free to point out typos. I find some from time to time. I repeat runes at times, so.

♥ I would like to thank my mom and my boyfriend Yatsume for supporting me as well. If he ever finishes the Yasuo guide he was going to make, I'll link it down here.

♥ As always, stay tuned for updates! I hope you all enjoy the new pictures! ♥

League of Legends Build Guide Author DatKawaiiBunny
DatKawaiiBunny Senna Guide
[10.10] ♥ DatKawaiiBunny's Senna Support/ADC Guide