It was especially fun as I went in fully expecting NURF mode and was planning my build accordingly.
I had a double take in the game after I bought this 
once I found out the mana was basically pointless, it was actually pretty funny; I had to figure out what I would get in place of it.
Thanks for giving me a chance to play this mode Riot.
Maximum Zilean4 votesOnly major flaw about URF mode is a select few champions make the game 100% unfun... With the balance stuff they did for it it resolved most of them. But there are still some really unfun things in this mode to be against.
JedenVojak10 votesI just wanted to thank Riot for a fun mode, take your complaints elsewhere please.
A Miss Fortune1 votesThe only thing I think Riot has to do is just disable 2 or 3 champs from the game because they make it counter-fun whereas it's suppose to be fun and nobody is suppose to care if they win or lose (ha, 2nd place you can't lose in URF.).
I just laned against a Nidalee and yeah. I tried hiding behind the minions but I think sometimes the minions were trying to hide behind me.....
Whimsy Spook2 votesNidalee isn't even that bad. Vel'koz is way worse. Nidalee has 1 projectile while Vel'koz can spam 4 ranged abilities making a lane completely unfun.
A Miss Fortune1 votesI honestly didn't even think of Vel'Koz
rip in tentacle
B1naryB0t3 votesURF-Azir is literally the most fun I've ever had in League.
yay nibbers3 votesPlaying against URF-Azir made me angrier than I've ever been at anything in Leauge.
It was one million times more satisfying to finally kill them than it would've been otherwise.
I love URF
Garlyle Wilds2 votesI have the same feeling with URF Syndra.
Balls.
Balls everywhere.
Dryditch2 votesPerma-Ulti Swain is THE BEST!
He is completely unkillable. :D
JedenVojak1 votesSwain does seem kinda awesome, and I honestly never thought of that.
I want to try out Mordekaiser - shields up all day.
Chaotic Reks1 votesget shields e'rey day
OneMoreDaySK1 votesJust note that shields took a nerf for this mode, otherwise, have fun.
Åron1 votesI tried Varus :D
He's a lot of fun, snipes for daaayyyys
Chaotic Reks1 votesyou should have seen it last year when it first came out
OneMoreDaySK1 votesThe only reason to buy mana is for champs that still require it for scaling. 
and 
come to mind, if I recall correctly.