Was bored, so I hit up some solo queue dominion games even though everyone knows how crazy the dominion randoms are. I thought it'd be fun to find a strategy that would consistently work with these unreliable randoms. I think I found it.
I call it
NLBLS.
Never-Leave-Bot-Lane-Sivir.Basically, you start with some relatively tanky runes and masteries. Grab promote and exhaust. Then say in champion select "I go bot forever". Never leave bot lane. Rush your W to level 2 and leave it there until the end of the game (each creep wave only has 3 creeps after all). Then just derp at bottom and infuriate the enemy by never stopping your push. Never push further than the enemy's bottom tower. Just leave everything else to your team. I guarantee you by the 3rd minute the enemy will have called for someone else to help him stop the giant creep waves you bring to their bottom tower. That's your entire purpose. Make them waste 2 people to stop just you (p.s: they need 3 to stop you).
The key to using promote is not to blow it at random, but to use it when your creeps are right in front of the tower. The promote minion is just there to cap the point while you piss off the enemy champion trying to stop it. Exhaust is exhaust. It's important. Fuck flash, it won't save you. Don't bother with anything else. You don't need garrison as you're not going to towerdive anything nor will you be sitting on your own tower to get towerdived (sit far back and interrupt them with q).
As long as your team is even remotely competent, they should be very happy fighting 3v4 constantly.
Here's an example of the score you will inevitably get:
As you can see, the enemy team did waaaaaaay better than my team technically. Look at the number of caps and the huge kill difference. Didn't matter. Hell, I didn't even know there was an Ezreal on the enemy team until this scoreboard. Never saw him. That Ezreal's gold score? 3000 gold less than Sivir. That's how strong NLBLS is.
This is now my winning Dominion strat.
Edit: It still won't save you from 4 kills 20 deaths Master Yi. Or the team that interprets "I solo bot forever" to mean "we should put 3 people at bot forever".