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Yuumi Build Guide by freddy66623

Support [Patch 12.15] Yuumi (and Book!) Guide to Botlane Dominance

Support [Patch 12.15] Yuumi (and Book!) Guide to Botlane Dominance

Updated on August 9, 2022
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League of Legends Build Guide Author freddy66623 Build Guide By freddy66623 238 20 624,069 Views 51 Comments
238 20 624,069 Views 51 Comments League of Legends Build Guide Author freddy66623 Yuumi Build Guide By freddy66623 Updated on August 9, 2022
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Runes: Good General Runes

1 2 3 4
Summon Aery
Manaflow Band
Gathering Storm

Presence of Mind
Cut Down

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


1 2
The Basics
LoL Summoner Spell: Exhaust


LoL Summoner Spell: Ignite


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

[Patch 12.15] Yuumi (and Book!) Guide to Botlane Dominance

By freddy66623
Guide Details
x Intro
x Conclusion
x Cheat Sheet
x Strengths & Weaknesses
x Ability Overview
x Runes Overview
x Team Comp
x Game Plan Early
x Items
x Gameplan Late

"You 'n me, we got this!"

Hey everyone, Timmy from TimnFreddy here. Whereas Freddy is a Top/Jungle main, I'm mostly a Support main and I'm here to tell you about one of my favorite supports in the entire game.

Yuumi .
In this guide we'll be going over Strengths and Weaknesses, what to do in various situations, how to make the most of your abilities and generally how to be a good kitty that will receive many scratchies on her chin and back.

Let's begin.

[UPDATE as of patch 10.13!]

This guide already prioritized Mana Regen/Ability Power over mana build-up so everything you read here is still applicable to Yuumi as of the latest patch.

[As of patch 10.15!]

Yuumi's mana restore on her passive Feline Friendship has been changed to restore %mana (as her E uses %mana on cast)

Overall this makes proccing her passive more important than ever before, and with the cooldown on it also reduced, you'll get even more chances to get it. Be careful not to get CC'd while doing so! This change should make Yuumi more reliable/sustainable in lane once again. No changes as of the current patch but will keep this part updated.

"Use your claws! Your CLAWS!"

There's a few things Yuumi does well and a few things she doesn't. Let's go over those now.

+ Goes well with any ADC / Carry
+ Basically infinite sustain in lane
+ Exceptional heals with Zoomies
+ Good zoning with Q Prowling Projectile
+ Multi-purpose ult (engage or disengage, root and damage.)
+ Free Adaptive Force damage means she can sit on AD or AP and always be useful.
+ Is a Cat
- Needs an ally to shine, very weak on her own
- Squishy
- Getting hard CC'd usually means death
- No hard CC of her own until level 6
- Even more Mana Reliant than before
- Easily distracted by shiny lights.

Overall, Yuumi is a valuable addition to any team and with a bit of finesse you can turn the tide of any battle by jumping from ally to ally, throwing shields and heals as you go. Just be careful not to get caught out and make sure you're always on an ally.

"So, you need a new shield buddy?"

Here we will quickly go over Yuumi's abilities and how to best use them.
P - Feline Friendship:
Yuumi empowers her next basic attack against an enemy champion to grant her 25−100 mana (+8% Maximum Mana) (depending on level) and a 60-400 (+40% of ability power) damage shield (also depending on level) that lasts until it is broken. This effect has a 18-6 second cooldown (once again depending on level).
If Yuumi is on an ally, the shield protects them instead.

A very helpful passive, especially in lane phase. Shield your allies and gain mana. This makes sure you both have amazing sustain in lane, just be careful not to get caught out while you're activating it!
Q - Prowling Projectile:
Yuumi fires a projectile that deals 40 / 70 / 100 / 130 / 160 / 190 (+30% of ability power) + (+2%-8% of the target's current health) in magic damage to the first enemy hit. If the projectile is in flight for 1 second, it instead deals 45 / 85 / 125 / 165 / 205 / 245 (+40% of ability power) magic damage and applies a 20% slow to enemies for 1 second.

If Yuumi is on an ally, she fires the projectile from her ally's position and the projectile can be controlled with your cursor for up to 2 seconds.
W - You and Me!:
Yuumi i]Passive: While Attached, Yuumi and her ally share 12 / 14 / 16 / 18 / 20 (+12 / 14 / 16 / 18 / 20%) adaptive force
Active: Yuumi dashes to an ally champion and attaches to them. While Attached, she follows her ally's movement and is untargetable by everything except tower damage.

Yuumi starts the game with a free point in this ability and your allies will be happy she does! All you have to do is sit on an ally to give them extra AD or AP!
E - Zoomies:
Yuumi heals herself or her attached ally for 70 / 94 / 118 / 142 / 166 / 190 (+40% of ability power) and grants 15% movement speed and 25 / 30 / 35 / 40 / 45% attack speed for 3 seconds.
If Yuumi is on an ally, the shield protects them instead.

An excellent healing ability! Attack speed! Movement Speed! Heals! This one really does it all. Use sparingly in the early game as the mana cost is quite significant. Once you build up a good deal of regen, feel free to use it a bit more often!
R - Final Chapter:
Yuumi opens Book, launching 7 waves of 60 / 100 / 140 (+20% of ability power) magic damage. Enemy champions who are hit by multiple waves take only 50% damage from any wave beyond the first, and they are rooted when struck by three of them.

During Final Chapter, Yuumi can move and cast You and Me! and Zoomies.

Overall a very good ultimate ability. Damage and root enemies. Good for engages or for getting your attached ally away from any sudden attackers (or even turning the fight on them!) Don't forget you can still heal and jump around while this ability is going off, so be sure to position yourself to hit as many enemies as possible!
"Do the bite-y thing! Yeah, that one!"

Refer to the notes above for more information on Runes and items.

Ignite is a very useful spell to have in lane to deny enemy heals and secure kills. A good spell that stays relevant throughout the whole game.
Exhaust is another great spell. Use it at the start of a fight to shut down the enemy ADC, near the end of a fight to keep them from running away, or even during a gank to stop the enemy jungler from chasing you, allowing your ADC to get away to safety! Stays relevant the whole game and might even be considered better later in the game due to the damage reduction it offers.
""Is it time to save the world again?"
Early game your job is to poke at the enemy ADC with your empowered Q Prowling Projectile, forcing them to use their healing potions or Heal summoner spell early. At the early stages of the game, don't forget to jump off and proc your passive Feline Friendship whenever you can to keep your mana topped off.
Whenever you're not activating your passive, make sure to sit on your ADC to give them the extra adaptive force. At level one this is approximately equal to them having an extra Long Sword so it's a nice advantage for them over the enemy ADC.

Do not spam your E Zoomies too much in the early stages, only use it when your ally really needs that extra health or needs to make a speedy exit (don't forget it gives them extra movement speed! This can be crucial in escaping ganks or even some skillshots)

Try to hit as many Q's Prowling Projectile as you can to stack your Spellthief's Edge fast. If you push up to tower don't be afraid to temporarily jump off your ally and give that pile of bricks a few autoattacks for even more cash.

Once you hit level 6, don't be afraid to drop the Final Chapter on your enemies to try and get your ADC a nice early kill.
"Tell me the game plan again. Wait. Fish! Someone has fish! Where is it?"

Yuumi's Mid Game

Your Mid and Late game are relatively straightforward. Poke at enemies with your Q Prowling Projectile for some nice damage (Don't forget the empowered projectile does %Health damage so you'll be taking big chunks of the enemy's HP) and use your E Zoomies to get your allies across the map faster and give them more attack speed.
Once you have your Imperial Mandate and Ardent Censer your mana will be filling up quite fast so you can make better use of your E Zoomies. It's slightly less spammable than before, but once you head into lategame with enough mana regen and ability power you won't feel much difference to before. Make sure that once you have the Mandate you hit your enemies with empowered Q Prowling Projectile to activate the passive and give your carry an extra bit of damage on their next attack.

As of patch 11.3, Chemtech Putrifier is a very good item choice to go for as well. Permanent grievous wounds for the ally you sit on, saving them the money of buying it themselves!

All throughout Mid and Late game, make sure you sit on top of your ADC, or jump over to whoever is fed the hardest to keep them alive longer. Whoever is carrying your team, you'll be carrying them with heals and buffs!
"Go go go go GO GO GO!"

Teamfights are where the good Yuumi players are separated from the bad ones. Regardless of what some might say, making the most of Yuumi requires some dexterous fingers and fast reactions.

In fights you'll be jumping from ally to ally, making sure everyone's health stays topped up with your E Zoomies, all while throwing out Q Prowling Projectile to do some damage and pick off people who are trying to run away from the fight so your allies don't have to waste time chasing them down and leaving the fight.

Cast your R Final Chapter at the start of the battle to catch as many people as you can, feel free to jump to another ally while it's active to achieve perfect positioning. The cooldown on your Ult is relatively low so you may actually be able to cast it again by the end of the fight or when you're chasing off stragglers (or being chased if the fight went south) especially when you have 40% CDR and a (few) cloud dragon(s)

Show your allies why Yuumi is considered one of the best supports out there by keeping as many of them alive as you can. If you're too late to save someone, don't risk your own life by jumping on to them only to die because the cooldown on your W You and Me! got activated and you were caught out. You can't heal allies if you're dead! (Unless you have a Redemption of course but still I wouldn't recommend dieing if you don't have to)
"I've got a good feeling about this one, Book!"
In conclusion, have a few useful pointers that will be sure to up your game even further!

- When you have Imperial Mandate remember to always let your Prowling Projectile become empowered before you hit targets so you can activate the passive.

- Your Passive Feline Friendship can activate on clones (e.g. Fiddlesticks, Shaco, Wukong, Neeko, LeBlanc, etc...

- You and Me! is a great ability, use it! Sit on your ADC and give them that extra adaptive force. Don't hang around lane autoattacking minions and getting caught out. The only times you should be off your ADC is if you're warding or activating Feline Friendship

- When you activate R Final Chapter use an E Zoomies immediately after to give your ally a nice speedboost so enemies can't get away (or catch up)

- Don't buy boots. Seriously. Do not waste your money on boots. If you're out on your own and you need a bit of extra speed, just cast E Zoomies on yourself until you can jump on the nearest ally.

In conclusion, I hope this guide has been helpful to you. Be sure to check out the added notes in the basic setup part of the guide as they contain some useful information as well.

Thanks for checking out my guide! Now get out there with Yuumi (and Book) and dominate that botlane!

If you have any questions feel free to comment down below or check out our stream Timnfreddy over on twitch
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