Hi, I'm an Azir/Aurelion Sol main (both 100k+ mastery) who is in grief because of the upcoming rework on Aurelion Sol, and the nerfs for Azir, so I have become determined to make Yuumi Mid work. This guide will be updated the more I learn, and become a guide for all the mentally ill leaue players like me (who am I kidding, that's everyone who plays league). So get out your notebooks to take notes, cause this is going to be a Lot.

P.S. This guide is very much a work-in-progress, and will be updated the more I play Yuumi-Mid, and learn more about her matchups and build optimizations. If you see parts of the build that could be optimized, or runes you like to run on her, please comment them and I will test them and change the guide accordingly. Thank you!

Yuumi's abilities are mostly trash, I'm going to go through all of them but the most important to pay attention to are her passive and her E.

Bop N' Block:

Yuumi's passive is one of the only reason's she can survive laning, and her greatest tool for trades. Just autoing the enemy champion once gives her a significant amount of mana back, and a shield to continue the trade with. Due to this, you only want to take trades when your passive is off cooldown, and you only want to take short trades, where you don't take much more damage than the value of the shield. However, you do some leniency with this, as your E will heal you, and you use it at the start of almost every trade, so start to think of your passive shield and E heal as a resource that you want to get rid of the exact amount every time you take a trade, so you stay at your previous health while damaging the enemy at the same time. Do this and you can't lose.

Prowling Projectile:

This ability isn't very useful on Yuumi Mid, since you don't build almost any ad, unless you buy a dark seal and stack it for very cheap ap, and since you won't be attached to anyone most of the time it's very slow and hard to hit. Only use this if you need to guarantee farm under tower, or use it to finish off a low opponent, or to mind game someone into moving into a wall or other teammate's ability. And of course, if you are attached to someone it does decent damage even without ap so try to hit it if you can.

You and Me!:

The stat boosts this ability has can come in useful if you are falling behind, and have a carry on your team, but since your heal will be very weak I'd only use this on someone who is faster than you and a fight is going on that you don't want to miss (example: Master Yi going into a fight with ult, Sion ult, Kled ult, Aurelion Sol flying in with a stun, etc.).

Zoomies!:

This is Yuumi's 2nd most important ability, and the reason I'm tempted to build Essence Reaver a lot of games. The amount of mana this ability consumes is ridiculous, but if you make sore to trade every time you use it, and to proc Pop N' Block as much as you can, it shouldn't be too bad to manage. But don't see this ability as just a free heal, it is your core all-in ability. It gives you a ridiculous amount of attack speed, move speed, and the heal can suprise unsuspecting enemies who think you are easy pickings. A great way to engage on an enemy is to trade until you are both half health or lower, keep going into for cs to make them comfortable with you going up over and over, and then when they go for a cs thinking you'll do the same, E and run at them, ignite, auto 3 times to proc your PTA, and then finish them off with Q and/or ult.

Final Chapter:

Ah, the biggest bait of Yuumi's kit, her ult. While playing Yuumi Support, this is a huge, fight changing ability, but this only slightly applies now. This is no longer an engage tool, but a finisher for an extremely low opponent out of your range, or as a de-engage tool for a ganking jungler or eager opponent who see's your cat as a free xp and gold snack. Using this an engage while you are by yourself is like running it down into enemy tower, the stun ends before your ult does, so you are stuck in an ult that does zero damage, slows you, and prevents you from autoing and fighting back. Only use this in a big teamfight, or as a get-away tool.

Yuumi's lane is suprisingly good... after you get Noonquiver. Before then, it's your job to mind-game the oppenent off the wave, and prevent them from perma-pushing you and preventing you from backing, because before Noonquiver your wave clear is so bad that if they push a couple waves under your tower, that by the time you have pushed it back to the middle of the lane they will already be back. Go for level 1 trades, with your passive you will win almost all of them if you back off after your shield wears off. I've even gotten a kill this way from a slightly too-eager Akali, so don't underestimate your level 1 trade. Make them tremble in fear and curse riot for making Yuumi too OP in mid lane. After Noonquiver, things are relatively easy, and honestly I might recomend building Noonquiver first even if you are going for the Magic Resist build, just for the clearing ability Noonquiver gives you. After getting this, your job is just to out-cs your oppenent, and not die to ganks, maybe even get a few solo kills if they are an over-eager melee champ. But whatever you do, you Cannot lose your gold lead, or else you won't be able to scale into the mid and late game.

Keep pushing waves and start looking for roams to top and bot, mostly top since bot will instantly have the reaction of both the adc and support instantly going in on you, killing themselves and you in the process, something might seem like an over-all gold lead for your team, but as a Yuumi Mid you can't afford to die. Top is a much safer alternative, as the enemy top laner pry won't be looking out for your roam, and with your ult you can stun them for your top laner to engage, and then while they're busy fighting each other you can support with your autos, galeforce if you have it, and kraken true damage if you built anti-tank. This is especially helpful for you since getting your tanky top laner ahead can give you an easy carry to latch onto and buff later on if you start to fall off.

Yuumi can struggle in teamfights just because most league players see a detatched Yuumi as free food, and will run right past your front line just to kill you, even if they die in the process, so the best course of action is to try and get as many enemies gathered up waiting for a chance to dive you, and to ult all of them for your team, and use galeforce to clean up any that survive. Also, galeforcing and bursting the enemy carry, then ulting to get away can be a valid tactic if you are ahead and have enough damage to do so. Really, just fight like an ADC, front to back, while keeping in mind your utility and CC.