no one said anything during the game but yeah, i couldn't turn it off so i dunno what it was but i was laning against jhin when it became a permanently active item, maybe it was affected by something in 
kit? also was playing against 
my team:
i dont think anyone on my team bugged it out? maybe leonas passive?
BeatzBoyFTW6 votesRead the patch notes.
EndlessSorcerer2 votesYou beat me to it by a few seconds.
Well played, good sir.
BLACK REALM GOD2 voteshe beat me too by exactly 1 minute. i was typing a longer message though so technically i win by information provided
FEDXSai2 votesthanks i ask everyone in game and no one said anything... riiip.
BeatzBoyFTW3 votesCz it's pretty basic that you should be reading the Patch Notes for every patch updates.
BLACK REALM GOD2 votesnooooo... that was part of the update. read the patch notes. muramana now procs only on champions and cant be toggled.