Just list something. One thing or as many as you can think of or whatever.
Assassinating faster with Rengar. Baron vs 5 Mordekaiser dragons(or normal dragons if possible :3) Darius Q heal without a cap, on all 9 other people.
3 things. 2 aren't even of use. pls rito.
Davids Uploader10 votesEssentially just remake Urf mode and play that all day with friends
HentRex4 votesUrf doombots
Stiv12343 votesUrf One for All?
Shroom Junkie3 votesNidalee on both teams. Goodbye sanity.
Titanium703 votesOr Lux! On Howling Abyss! With T2 Towers as spawn Point and further reduced Death Timers! x'D
Chespin20131 votesor Urf Zilean just throw the bombs all over the place LOL
Matezoide7 votesPick Malphite
Set invulnerability
100% CDR
0 Mana Cost
Press R over and over again
http://30.media.tumblr.com/1a95779d275d0c637de389448602b3f4/tumblr_mo1xtiJSU41snndnso1_250.gif
https://33.media.tumblr.com/tumblr_m92zcijN9w1qe89guo1_400.gif
Big Lincoln6 votesLine the map up with as many Teemos as possible
Proceed to create the "Dunkimo" Effect
Red Ryu5 votesI'd practice my long range ults and skill shots.
Then I would work on technical stuff with some characters like learning how to jump over a wall as Riven.
Burn My Dread5 votesPractice flashing over long walls
Bârd5 votesFlashing over skillshots Landing max range bard ults
The Fast5 votesActually using the mode to practice CSing, because I can't be arsed to boot up a custom game every 10 minutes to do it otherwise. Custom mode would make it so much easier.
CatSith4 votesIf there was a sandbox mode, it would be cool to see players create an actual league story mode.
DrCyanide4 votesI think I'd make a new game mode - Titans.
One player on each team starts out level 6 with extra gold, the rest have normal starts. What's the best strategy to win?
Josheheh1 voteslevel 6 karthus wonder if you can nuke a bunch of level ones with your ult.
Titanium703 votesMh... difficult...
1011001110002 votesList of things to practice:
and every dash ult over walls. I need to just be better at those things (I'm garbage at them).
3-axis. I swear to god, it just looks so cool. I wanna do it.
Wall-riding his ult. Sometimes I mess up with my escape and clip something.
Also, if I could figure out a way to abuse collision to make him do sharp turns in the jungle, that'd be epic.
Late-game champion mechanics in general.
Figure out how much AP I Need to one-shot tanks with my ult.
All of these are obviously practical in some way, but they're also awesome as shit to accomplish.
AMYS GRAVE2 votespractice flash+X combos.
Chespin20132 votesNew Game mode gromp ball get a group of these champions 
to toss the gromp into the enemies fountain
Jofeyy2 votesI would make a gamemode where I was a max level, full build 
with 100% CDR vs an increasing wave of minions coming down a lane, to defend a nexus with 1 hp. Kind of like a hoard mode. :D
Singing Lark2 votesOne-shotting baron with 
.
Renascent2 votesDisable minion spawns in all but one lane.
I can finally have my 1v1 without worrying about whose minions push harder than the other.
The Bearded Bard1 votesYou can already take Baron alone with Morde and a dragon ghost.
Shroom Junkie1 votesZero cooldowns. Imagine Ezreal ults just going through every lane, you'd win just by sitting in the fountain and as long as someone sat at drag to keep him occupied you could solo it xD
Flashes all day
Karthus Death Arena
Teemo minefield
Infinite Irelia ulting
Shaco permastealth and box minefield
Permanent Fiddlesticks ult
Never ending Blitzcrank CC and Thresh pulls- WELCOME TO HOOK CITY!!!
Shroom Junkie1 votesPlace a rank 5 
tunnel, and have a 40% CDR rank 3 ult Kassadin go through it and flash/ult to the other side and go through it as many times as he can.
Melledoneus1 votesMake 
's dash a higher cooldown to prove to Riot that it's how to make him less oppressive in lane.
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.
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Nah.
ULTIMATE POWAAAAAAAAAAAAAAAAAAAAAAAAAAAAAH!
