Full AD comps should have also be punished this way in season 6 - early 8
ok granted this is an ABSURDLY rare situation
https://matchhistory.na.leagueoflegends.com/en/#match-details/NA1/2809467621/207008136?tab=overview
they had

a full AP comp
4 of which (excluding nunu)
do damage with the same spell multiple times
are spam mages
DOT
bellows breath
i saw this... and the instant i finished my runic... i built 
and i was literally UNOTUCHABLE.
this is what SHOULD be the case if the enemy drafts an entire comp that is hard-countered by 1 item.
if the game lasted longer by next item was going to be
.
THIS is exactly how u are SUPPOSED to punish BAD compositions like they had.
so riot..
i dont say this often in the balance section.... but... GOOD JOB.
HOWEVER, its begs the question.
how come in season 6 7 and early 8 with crit ADC running rampant.
i could build {{item:3157
vs an all AD comp and it did JACK SHIT.
yes riot... you fixed it... and thank god u did... but
MAKE SURE YOU REALIST THAT WE APPRECIATE IT WHEN U DO THINGS RIGHT!
you NEED to be able to punish bad drafts in this manner. THIS is what makes the game FUN to play, altering your build for a given situation.
this is something i almost NEVER have to do. because it NEVER used to make any difference.
please riot keep this up