is actually a super good laner against some champs, mostly the assassins who don't get their power spike until level 6 but will still try and kill you early. I haven't tried it since the Q nerf, but pre-nerf you could start Q and have ridiculously fast early wave clear. Since Q auto-targets the lowest hp minion in range, CS was also very easy.
So against these:
you start Q and align yourself so it pokes them when they're in melee range to CS. You get a lot of early damage this way, but they'll back off pretty quickly and pop some pots.
At that point, back off the wave so you don't push too hard. Just last-hit with AA until they come into range, then Q them. Do this until level 2 or 3. Take Q, E, E, W, then max Q asap. If they're around 60% or lower, make it obvious that you're leaving lane by running up river to your lane that's doing the worst. This can potentially cause top or bot to ease up slightly expecting a gank.
Run into the island bush in the river until stealth, then run back and gank your own lane. Usually they'll be pushed up slightly or at middle. Go behind them from their turret jg entrance, E, then Q spam and Ignite/Flash for the kill if necessary. It's absurdly easy against melee assassins.
From there, check for guaranteed ganks or assists. If there aren't any, stay in lane and AA last-hit. Go back to buy after you see what your laner built. If they built MR, proceed to rank E first and buy a
. If they built armor, buy a
or start your void staff. If they're an AP threat, start your Abyssal. If they're an AD threat, start your Armguard.
The easy part is getting kills. The hard part is managing your wave and having the self control to not roam for kills too much or overextend out of snowball greed. If you roam too much, you will put yourself at a level disadvantage. If you stay in lane and clear mostly with Q, you will be pushed up the whole lane.
Another thing to be careful of is not taking the mid turret too soon, which is very easy to do with a big early gold and power advantage. You need time to farm to get a level advantage in lane and let your teammates get in their farm (unless your entire comp is totally weighted to early/mid game). You're also encouraging enemy lanes to roam, and you'll end up dead or another lane will be steamrolled.
A lot of these assassins getting shut down early forces them to roam, so be sure to follow. Most of the time you can intercept them or at least keep vision on the way to side lanes and team up on them. If they do stay in lane, and you have managed your wave, keep killing them until 6. At that point, farm with Q as conservatively as you can until you've built some armor/resist to survive their burst and increase your R shield.
Another strat is in top lane against champs like
. Basically your strat is to harass them as often as you can with Q, and they will eventually try to engage you with a slow and chase. Save your W for this and let them chase, spamming Q the whole way. After a few seconds, they'll realize they're dying and reverse direction, but they have a lot of lane to run down. Follow immediately and keep spamming Q. E if in range. Flash to E if it's the only way to get the kill, and it's guaranteed. You hard counter Nasus and Singed. There is nothing they can do to you as long as you rush boots. Shove their turret asap, watch mid and bot, and clear their jungle when they're dead.