“Although Galio is supposed to be a mage counter he actually doesn't do TOO bad into Yasuo. Galio has a lot of cc combined with aftershock he can actually chunk you pretty hard with his combo. Also, since he has so much cc his gank setup is pretty strong so be wary of that. Bait out his W and go in when its down or else he will hit his whole combo on you. Can go Cleanse if their jungler has a lot of cc also if you struggle.”
“(always go Conqueror vs Galio) If he E's in and you're healthy at (mostly) all levels you can all him after he procs aftershock (you should have conq in this matchup). Being healthy when fighting is key! If you are both at equal health you will most likely lose the trade. If you can dodge his E with yours, go in after and you shouldn't lose (mostly killable pre first back). Lane gets EXTREME hard to kill once he has some component item and some levels, but you should still be able to kill it depending on his spell usage. Galio can set up ganks very well so keep an eye on the enemy jungler and how he is pathing. Follow his ult roam and try to move already when he is going to move so you're there way earlier. Mercs good vs Galio if they have more CCs ”
“Very boring lane, he can never kill you but you can never kill him. Take conq and just scale and hope your team doesnt die to his roams. Take unflinching with 2nd wind just to get through his cc easier. Only way you really die is if you choose to go aggro when his jungler is nearby and you get chain cced.”
“This match up is mainly based on reactions but LeBlanc does still struggle against Galio because he is an anti-mage champion. If Galio can taunt Leblanc when she W's in, he will win the trades. If Galio can't do this, you should be able to get a free trade onto him if you dodge his charge.”
“ Cannot reallly kill him or vice versa
 Take TP.
 The one who influences the map more wins. ”
“Galio is definitely much harder after his recent changes. he can very easily 100-0 you and overall outtrade you from early on. If you go on him early when he has all cooldowns up, he will win the trade. Wait for him to use his Q to farm or harrass and then jump on him. When you are going out from a trade, his charge is much faster than your spin now, so you have to spin much earlier in the animation to dodge it. ”
“Won't kill him, but he can't really kill me either since they've nerfed him and he can no longer W+Flash. Farm fest, but Lux has the potential to be more useful late game picking off enemies.”
“MELEE = PUSH EARLY (LEVELS 1-2) - CARE FOR GANKS! (SPAM Q'S TILL 50-60% MANA).
Corrupting due to his Q poke and because it's practically impossible to nuke him down in a single burst. We need all the sustain we can get.
Play with cleanse if the setup with their jungler is too strong (Heca/Galio for example). Galio provides lots of CC but it is fairly predictable. I would play with Ignite but would stay safe on lane and focus more on ganks. Beware! Everytime you gank there might be a Galio ult popping up on your target location (their ADC most of the times), so every time you roam consider it that it will be a 3v3 (unless you finish the job quickly).
Play according to that fact.”
“Only an annoying lane because he is very hard to kill.”
“Not too much of a threat. Hes melee, you are quite good at escaping when you're not cc'd and you can dodge all of his abilities. Be careful of his taunt, because its an excellent tool to set up a gank. With a bit of magic resist he should never be able to kill you.”