Summon Aery
- Dealing damage procs aery
- Healing or shielding procs aery
- Yuumi does both of those things
- Go take aery
Manaflow Band
- More mana = More spells casted
- Yuumi gives mana with “E” and to give mana to teammates, you need mana to cast the spell
Transcendence
- Lower cooldown = more spells casted in a time period
- More spells casted = better survivability for teammate
- It’s like giving your teammate triumph because of level 11 bonus
Scorch
- good for poking and taking kills cause supports also need gold
Gathering Storm
- More ap = more shield, heals, and damage
Presence of Mind
- Good for laning phase
- Mana is needed to give mana to teammates
- No way you reach 0 mana unless you miss your q, even then you can auto enemy to activate this
Cut down
- Yuumi has the 2nd lowest base hp at lvl 1(the first one is kled without skaarl but who tf goes adc or support kled?)
- Yuumi has the lowest base hp at lvl 18
- So basically everytime you deal damage the cut down rune will be used
Font of Life
- If you are not going to take precision secondary then you might as well get this
- Yuumi q slows enemy and which will proc font of life
Revitalize
- You get more shield and heal power with this thing so take it

here's the build then im gonna explain why i think this should be better than going pure support build and what ever the luden's tempest mythic is all about.
Everfrost
- 20 ability haste
- 70 ability power
- 10 ability power per legendary item
Shard of True Ice
- 40 ability power
- 75 health
Mejai's Soulstealer
- 20 - 145 ability power
Rabadon's Deathcap
- 120 ability power minimum
Ardent Censer
- 60 ability power
- 8% heal and shield power
Ionian Boots of Lucidity
- 20 ability haste
- 12 summoner spell haste


Swappables
Redemption
- 15 ability haste
- 200 health
- 16% heal and shield power
Horizon Focus
- 15 ability haste
- 100 ability power
- 150 health
Chemtech Putrifier
- 15 ability haste
- 40 ability power
- 8% heal and shield power
Mikael's Blessing
- 15 ability haste
- 16% heal and shield power

Everfrost
- good if the enemy team has a melee champ or a short range champ because you can just cc them whenever they get close enough
- good if you are with an adc with a very short range like nilah or a melee adc
- can be used as an escape, chase, engage, disengage
Shard of True Ice
- Go to gold income support item for yuumi
- You don't have a choice, you are a support and is supposed to give vision for your team
Mejai's Soulstealer
- The cheapest Legendary item you can get ingame (not including the initial support items which cost only 400
- 2nd highest ap per item (rabadon's the first one cause of the 35% thingy)
Rabadon's Deathcap
- High ap
- Gives more ap per ap so you get more ap
Ardent Censer
- synergizes well with most adc since they need attack speed and this gives attack speed because of yuumi's "E" which also gives attack speed
Ionian Boots of Lucidity
- lowers the cooldown of spells so you can take winning fights more often
- Yuumi wastes the movement speed of this thing so it's important to trade this item for one of the swappables

The Swappables
Redemption
- can be swapped for boots or the ardent censer
- if 5v5s happens very often
- here's a pic of meerkats under a redemption
Horizon Focus
- swappable with boots
- cant go wrong with more ap
- the passive works well with this build since you don't have much magic penetration, so the best thing to do is to increase damage everytime you hit q
- 15 ability haste which is close to the 20 ability haste of the ionian boots
Chemtech Putrifier
- swappable with ardent censer and boots
- buy if you need the Grievous Wounds
- the reason why chemtech instead of morello(even tho this has a lot more ap and also magic pen) is because yuumi doesnt need the magic pen since you are the support and also it has 8% heal and shield power
Mikael's Blessing
- swappable with ardent
- If the ADC wasnt looking at chat while you were telling them to take cleanse since they have both cc champs in the bot lane, then buy this
- a good item, i think

I'll be using Yuumi's scaling at lvl 18 since it would be easier for me.
here's the pic of the spreadsheet i made for this

https://docs.google.com/spreadsheets/d/1ToUecUO3bGvcDXO4ZO7DA4nkHlXP16MJ2CwgMETin0M/edit?usp=sharing

ill continue this next time