Why should you pick Teemo at top? Mainly in a draft pick (in blind pick get him whenever you want xD) you should pick him versus champions who rely mostly upon auto-attacks such as Xin Zhao, but he can also be a big pain in he **** to more passive champions like Malphite. With a majorly AP Teemo like the one in this guide you should try to focus on hitting with basic attacks and running away. The best way to accomplish this is waiting for them to go for last-hits and just aa (for future reference aa is auto-attacking) them one and the run into a bush, this is very effective because your passive will make his life go down like crazy will not pushing the lane too much.

Pros
-Mushrooms are huge nukes
-Blind is amazing vs aa reliant champs.
-Blind can stop their adc in team fights.
-High mobility with w.
-Just one aa does a lot of damage.
-With the Mercurial Scimitar they can't stun you
-Cute as *****************.

Cons
-Really squishy
-Hard to dish out damage in team fights.
-Bad vs top ad casters such as pantheon.

Passive --> Camouflage
Very interesting ability since it allows you to camp, troll on an escape or wait till the perfect opportunity to attack someone while still being in the range of minion xp. If you have warded up with your mushrooms and you see someone coming and there is no one else near you I recommend placing a mushy where you think he is coming and wait at an aa range. If you see someone coming in for a gank DO NOT use this passive in a brush, the only time you should that is when you see your own jungler can come quick. This is because it's not hard to guess in which brush you have hidden and they will use their skillshot abilities to kill you. If possible just run away with your w but if even that isn't possible try to use this ability somewhere they can't see you using it. Best places to go invisible are right in the middle of the lane or on one side away from the brush.

Q --> Blinding Dart
This is the last ability I max out because of its purpose. It's true it does damage but the most important part is the blind and while it is also true that the blind time increases with the level it is not enough to be worth maxing out sooner. This ability is very important because it can turn around the outcome of a one vs one.
Important note: the blind isn't automatic, it takes a fraction of a second to work. I recommend people who are new to Teemo or who haven't noticed this to go against a neutral monster and using it and seeing how long it takes, it is pretty important to now. Play Video
W --> Move Quick
Very important skill for Teemo since it lets him escape but also hunt down enemies. Note that while it's not activated if you get damaged the passive will turn off for a little but if you activate it even being damaged you'll have the speed. It is very important to not use this skill until needed because if used before receiving damage the movement speed advantage won't be as big.

E --> Toxic Shot
Teemo's most important skill of all paired with mushrooms. This is and Ap build, not Ad nor much of an As either. You have to prioritize aa once or twice (or how many times you can) trying to not trade with the enemy champ or attracting the attention of too many minions. The best way to do this is by standing next to the bush and each time he comes to last hit aa once and while the dart flies hide in the brush; if done right the enemy minions won't even look at you and thus not pushing the lane at all. I recommend a constant harass to lower the enemy's health bar as much as possible. Be careful for trades because you almost always will end up loosing.

R --> Noxious Trap (Known to Teemo as mushy love)
On an Ap Teemo VERY IMPORTANT to know how to place them right.

Malady
Important item because of its passives. Malady will give you all the As you need for this Teemo build to work, will give you some Ap needed to start this Teemo on a roll and most importantly deals magic damage per hit THAT SCALES WITH YOUR AP. Teemo's poison scales 0.7 per Ap, but with this item it will be 0.8, which is a lot if you ask me.
Mercury's Tread
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Liandrys Torment
Great item for almost any Ap champ since it gives you some mr penetration, Ap, highly need Hp AND an awesome pasive that makes it so you can kill very tanky targets.
Rabadons Deathcap
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Mercurial Scimitar
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Guardian Angel
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