baron is stupid right now its not funny.
(sorry for bad english) just played a game. there we got pretty crushed hard by an hard carry yasuo and katarina. around the 25 minute mark did they have an open bot and mid. but then we get to late game, and after a "teamfight" we killed both of them while the rest escape and survived. we (of course) decide to go baron wich was fine to me. so we killed it regroupedto mid. and by a singel minute after we got the baron we all run down mid and destroy there towers inhib and nexus. so what they did pretty much on 25 minutes. did we do on 1 minute. all becuse of the singel big buff. so give the minions the power they need to fight for noxus. :P
it feel like baron will give u a 100% comback chance if u kill it. i guess ashe and garen also went full carry mode and carried us to victory but still tho... https://imgur.com/a/Kdit7
and this Yasuo a
and this Zyra a 
a siege minion with Baron Buff. You'll shit bricks.