courage of the colossus seems to be really strong on champs with cc and champs like vi , camille and nautilus are really hard to take down because courage of the colossus adds to shields. champs with shields and cc seem to get a second health bar with courage of the colossus. champs with high ad can take courage of the colossus and still do lots of damage and take less in return.
i dot mind CoC on super tanky tanks yeah it sucks that you cant kill them but there's only so much they can do in a fight after they blow their CC what i don't like is the champs that normally have to choose between damage and tank and can use CoC to "solve" that problem, champs like hecarim vi Camille, a bunch of divers honestly.
Yup, feels pretty op any time I use it. I was playing leona earlier in poro king, and I was practically unkillable, even if I dove in 1v5
it suppose to be strong on those champs that is why it is there just as fervor is strong on auto attack adcs and thunderlords is strong on champs who spam abilities
they already nerfed CoC
U tell me. https://youtu.be/NpyHCluv2wI
It recently took a huge nerf.
It is fine now.
I've been starting to play 
Aurelion Sol and I find Mr star forger quite fun. I'm a 
Rammus main therefor I'm sooooo used to playing a tanky champion that Sol's semi-tankiness somewhat helps. Don't get me wrong she's Definitely more reliable Full AP with Standard Builds but being squishy annoys me therefore I play her tankier than most. For example I ACTUALLY tend to use Courage of the Colossus when support in Summoner's Rift because Q and R proc it, BUT I do usually go Storm Raiders Surge Or Thunderlords, although I don't find it that necessary IF I have Magic penetration in my Runes or +4,5%MS(MoveSpeed) Runes.
Anyways IDK if this is a trend but is FANTASTIC for Twisted Treeline 3v3 JG
Aurelion Sol's mobility allows her to roam freely through the map (I don't recommend JG in Summoner's Rift). The 3v3 map IS smaller Comet of Legend(E) Allows you to get to the Altars A LOT quicker and their are less monster camps which I Also find easier to kite so your clear speed is quicker. You also take less DMG than you would in the Summoner's Rift SO that's GOOD LoL. Since this map tends to have more Heavy AD champs or On-Hit AP champs the tankiness of the JG builds helps tremendously. I've tried pretty much every Build you can think of & ARMOR does come in handy, FULL AP builds make you WAY too squishy
Possible Builds↓
Boots & Items MAY vary depending on matchup
These are just some of my few favorite ones
