Alright, I want to preface by saying that this is all for fun, it's not a comp that wins games all the time, and it's countered by high damage hard engage. Assassins are generally fine because they're squishy, but Pantheon or Jax mess this up. And there's a Jax in like, every game if you don't ban him. It's not a good comp, but it's fun as hell to play.

I first messed with this when I got a game with Chauffeur playing Warwick - I obviously took it, despite it being the objectively incorrect play, and I noticed that my W movespeed bonus was applied to my teammate. My teammate was a Zed, so this was pretty much useless, but it got me thinking - what other champions have a lot of MS in their kit? And that's when it hit me, and I decided to queue with my friend playing Sivir, and he pulled out his Singed. Thus, the dream team was born.

Sivir/Singed is not a very good comp, but it's the most fun comp that I've had in the game that wasn't either disgusting (Shaco/Singed) or incredibly cheesy (Ivern/Annie). The reason it works is mostly because Sivir has some insane kite potential, meaning that the enemy has to choose to either chase only Singed (while Sivir autos them to death), chase only Sivir (so Singed can harass them), or split them up (so both of them kite and win the matchup). Naturally, this is assuming a perfect scenario, but the key concept is the same - you have two excellent kiters, one with solid unconditional sustained damage, and one with incredible peel and slipperiness.

A large part of this comp is denying enemies from getting the plant, and Singed excels at that. He can run in with Q and on top of Sivir's threat range, this will zone most comps off of the plant, letting him and Sivir auto it quickly (Sivir naturally popping W for the attack speed). This is especially potent on the Ionia map, as there's only one fruit and control of it is incredibly gamewinning.

I'll be honest - you're most likely losing at least 2 out of the first 3 rounds, depending on enemy team comps, but this obviously can be anywhere from 0 to 3 as there's a lot of variance in who you face, as well as when you face them. You're incredibly weak early, Singed only coming partially online after hitting 6 and still needing his item for a damage spike, and Sivir needing 1 to 2 items to function. However, in the midgame you thrive, and you scale really well lategame if you're able to hit good augments.

The creme de la creme for augments is getting Chauffeur on Sivir. The reason it works so well is not only because having an ADC on a highly mobile kiter is good, but the fact that her ult's movespeed will double up due to the passive movespeed transferring to her host. This alone makes a good augment great, letting you rush down the enemy without much risk of getting hit by most skillshots. Sivir likely dies in these engages, but that's okay - the damage she and Singed will do before her death makes it incredibly easy for Singed to clean up. If she doesn't, that's all the better, as she can heal off the plants and get ready to go again. Because you're so fast, you don't even need to contest most of the plants, you just get there before the enemy does.

On Sivir, there's a few possible builds you can go, in my eyes. Her choices are highly variable depending on enemy comps, which helps a lot when you don't know what you're facing when you lock in. She can go a bursty crit build with IE and Collector as her first two items, followed by whatever you need after the fact, usually just high-damage crit items like Bloodthirster, but sometimes speccing out of crit for Ravenous Hydra or a lethality item like Edge of Night. She can also go pure on-hit if she gets the augments for it, building an insane Guinsoos into Zephyr into BoRK item set that absolutely melts tanks if they refuse to focus you. You can also go a more standard ADC build with Galeforce or Navori, which is generally my go-to if there's not an abundance of tanks or squishies, and my augments are only just okay. There are a few niche mythics you can go depending on your augments (more on that later).

On Singed, you once again have the gift of variance. For your first item, it's usually Riftmaker, Liandry's, Luden's, Rod of Ages, or rarely a tank item. After that you build standard Singed things, minus dead man's, which just... isn't that good on him in this mode, I feel. Rylai's, Demonic, Cosmic, Deathcap... it doesn't get all that interesting.

For boot choices, 70% of the time on Sivir I'll go Ghostcrawlers. It gives you insane escape potential letting you harass with Qs while Singed does Singed things, and it's a lot better than you may think at first glance. Berserker's is a good choice if you're facing tanks and need the damage, Swifties are good if you're facing a lot of slows or just need that extra movespeed to kite any champions that don't care about walls, and Ionian Boots are pickable depending on your augments (more on that later).

On Singed, you just go Merc Treads or Tabis most of the time, but every now and then you can justify Swifties or Sorcerer's. Ghostcrawlers are funny, but not usually good.

For starting items, Sivir pretty much always goes Guardian's Hammer. Singed goes either Shroud, Orb, or Horn, depending on what he needs in the first few rounds (damage, hybrid, tankiness).

For each section, I'll be listing Augments in ascending order - that is, from Silver to Prismatic.

For Sivir, Typhoon is pretty alright if you want a bit of extra damage, especially on on-hit, and Deft is good no matter what you build. Firebrand is solid if your Singed also gets a burn augment, because they stack with each other. Any of the crit augments are pretty solid, for obvious reasons. Lightning Strikes makes an on-hit build especially strong. Tank It or Leave It is surprisingly solid on her, since she likes the free stats and extra survivability. With Haste is potentially one of the greatest augments you can get - it makes Ionian Boots give 115 movespeed, and with items like Duskblade and Ravenous Hydra, you're able to zip across the battlefield while dishing out incredibly strong Qs.

Singed really likes Ice Cold, since it helps his Rylai's a lot. Vulnerability is an incredible augment on him since it lets his items and burns crit - this is absolutely insane and should not be underestimated. Evocation is really good if you're able to get away for a few seconds, letting you go back into the fight renewed - though you do miss Flee a bit. Witchful Thinking is pretty good, obviously. Apex Inventor is incredibly good, and lets you go Luden's instead of Liandry's, which will increase your damage a ton, especially versus squishies. Ethereal Weapon, if built correctly, lets you win with insane damage using items like BoRK, utterly demolishing tanks. Phenomenal Evil is 20-40 free AP per round, just because of how your Q procs it.

As for augments that both teammates really love, there's a few. Contract Killer is possibly one of the best silver augments in the game, giving a nice flat 10% damage on one target and a solid gold swing for killing them. Executioner is another solid pick if you want to deal a bit more damage. Juice Box is just consistently pretty okay. Restless Restoration is a must-pick for both team members, since so much of the game is spent kiting, it lets you fight insane battles of attrition. Thread the Needle is pretty solid on either of the two if you have no incredibly good options.

I'll separate prismatic augments here, just because so many of them are insanely good.

Sivir obviously wants Chauffeur, it's what the comp is built around, although it can function without it. Symphony of War is a good pick just because it gives you Lethal Tempo. Tap Dancer is possibly one of the funniest augments you can take, and it works incredibly well with her kit due to her kiting potential.

Singed likes Goliath, giving him extra health and percentage AP - at worst, it's a mini-rabadons. Infernal Conduit is an incredibly good pick due to his Q being a damage over time and the fact that he often builds Liandry's on top of always building Demonic. Jeweled Gauntlet is pretty good, especially with the AP crit item. Omni-Soul isn't great, but it's a fine option if you don't have any better ones, since Singed loves any of the souls. Trueshot Prodigy is powerful just because of how much you'll be kiting, and how often you'll be a long distance away while Q whittles away at the enemy team.

Both of them don't mind Feel the Burn if you're getting one-tapped by assassins, naturally.

You lose to Shaco if you don't play well, but often you're able to outplay the hell out of him - speaking as a Shaco Support main, most of the Shaco players in this mode are bad. High-damage engage with CC often kills you, too, like Jax or Pantheon. Alistar is just dumb, he's a perma-ban for me regardless of what comp I'm playing. Zoning champions like Heimer and Zyra fall apart if you're able to rush them down before they set up, though that obviously requires a lot of speed and/or Ghostcrawlers. Any champions resistant to kiting like Kayle will often screw you over (also Kayle is just dumb in this gamemode), and Teemo can often run you over if he plays engages correctly. With all of that said, though, no matchup is 100% unwinnable, as this is a surprisingly high skill-ceiling comp, and a lot of the time you're able to outplay the enemy.

Thank you for reading! Feel free to ask me anything in the comments - I'll give you my honest thoughts :)

Sorry for the poor formatting - it's very hard to fight BBcode and I have zero idea how I'd want to format a guide like this in BBcode.