This is my guide for yuumi, it is based of my opinion and the build may not be the best but its what I use, in the following chapters I have included tips and strategies for yuumi and her abilities, as well as different playstyles you could use. Hope it helps! Meow!

The most important thing to learn as Yuumi (in my opinion) is how to choose to 'pocket' throughout the round, knowing who will benefit most from your help and who can sustain themselves without you is important and there are are few things you need to take into consideration when choosing this. The first thing you need to consider is the self sustain of your possible ally, if they can heal themselves effectively than you wont be needed and you would be better off choosing someone else. Next is their playstyle if your possible ally is good at slow trades then you will probably be helpful were as if they are about early full on battle than you may not be as helpful and once again you should choose someone else.

Bop 'n' Block is an important but often overlooked part of Yuumi's kit, it provides Yuumi with mana as well as extra shield to your ally which can save them or prepare them for an upcoming battle. In order to use this effectively in battle press w, right click your opponent and then w back to your ally giving them the shield without you staying off them for too long, as the shield has no duration use it whenever you have it and your ally will keep it for as long as you stay on them.

Prowling projectile is Yuumi's q and is a slow moving skillshot that powers up after a second in flight and can be controlled with your cursor while attached to an all, it doesn't do much damage but you can check brush for your ally and you can guide it around minions to pressure enemy champions while laning

You and me is arguably the most important part of Yuumi's kit, it either attaches you to an ally or detaches you from an ally. When you are attached to an ally you are untargetable by everything but turrets, your ally gains adaptive force, you follow your ally around automaticlly, you cannot basic attack and your spells are slightly modified. You and me can be cast over walls and you will simply go through the wall when attaching to an ally on the other side, you will stay attached to an ally unless you get of, they use teleport or they die.

Zoomies is Yuumi's e and heals your self, grants yourself attack speed and grants yourself movement speed. while attached to an ally all its benefits instead go to them and this is why Yuumi should attach to allies who can slowly trade as she can heal the slow trade and it becomes almost free damage

Final chapter is Yuumi's ultimate, it sends out seven short range waves that pierce through enemies and deal damage, the damage is lowered down to a cap for individual champions each time they are hit, if they are hit 3 times they are rooted. Final chapter can be cast while on an ally and you can move, attach, detach and swap allies while casting this ability. If your ally is chasing an enemy you can use this to root the enemy for your ally while also dealing damage, as it pierces through enemies you can also use it in a team fight to hit multiple enemies and give your team the advantage, once you choose the direction of this ability you cannot change it so don't use it too close too enemies or they could go past you
and you will miss it. Final chapter is very good to use for your allies not yourself as they can capitalize on the root better than you.

There are three main playstyles for Yuumi, Full heal, Max ap and solo damage, the last playstyle is more of a meme but if you want to go ahead. Full heal focuses on high levels of healing for zoomies and works well for tanks to make them unkillable unless focused by multiple enemies and combines ability power and cooldown reduction in order to achieve maximum healing. Max ap focuses on giving lots of ap to your allies in order to make them unstoppable killing machines and s pretty overpowered but sacrifices your ability to heal as well. Solo damage focuses on staying off your allies and killing opponents as if your a adc not a support it not very good but FOR THE MEMES!.

PROS + No getting ganked and dying before your team gets there + Don't have to worry about attacking + Heal your team

CONS - If you're teammates die they will blame it on you - Bad offense - You'll level up slower