Made a detailed flow chart for anyone whose thinking about picking up Galio

Do you think you could explain to me again? I didn't catch all of that.

"Do they have cleanse?" "Does their support have Mikaels?" "Are knock ups present?"

i think you're missing arrows that point both 'yes' and 'no' to a 'no'

Galio is useful even without Flash if you pick him correctly, and that is into AoE based team that already have an initation. So, if you have a Malphite, Wukong, Amumu or something similar - then pick Galio, as he is an excellent follow up, with one of the most damaging AoE CC abilities in the game. And no, getting hit 8 times during the channel is not hard if you used ultimate properly and caught either a lot of enemy champions at once or enemy minions (yes, they count) or even just used the ultimate with some sort of DoT on yourself (any DoT like Malz E, Swain E or Q, Teemo E, Liandry's Torment, Ignite etc.). Also, it is important to remember that canceling the channel early (doesn't matter if enemies cancelled or you did it yourself) doesn't decrease damage dealt - so if you already got hit 8 times then you will deal full damage no matter what.

Poor Galio, the most underrated champion in the league.

you lost me at "is galio useful" :^)