Hey LoL-Gamers.
This is a guide for all Teemo fans(Hust,hust)and those who want to play him in a new way.
I am not really on a high Elo(Silver 5) and i just made this guide for fun ^^

PROS:
+really tanky
+whole bunch of fun
+You can harras enemys,while in stealth

CONS:
-A bit usless in Early
-Most will flame you cause you play Teemo
-Really hard to master

You just take Flat Amor Marks and Seals(For the early tankyness)
And some Magic Resist to scale in Late.
And Movement Speed for boosting your Speed from you W up,while tanky the **** out of the enemy team :D

You go normal tank in masteries.You can go the Tenaucios for more tankyness in teamfights,but you normaly don´t need them cause you will be tanky enough in Mid-/Lategame.

In Offensiv you get some Abilitypower and a bit Attackspeed to get some more poison on your enemys to harras them more in lane.

You definetly need Flash or Gohst(What you like more)
For the 2. Spell you can choose Teleport or Ignite

DON´T EVEN TRY TO DO THIS(It is at your own risk)

Tankmo is the ONLY champion who can burn the **** out of the enemy team while he is still in Stealth(Cause Sunfire=OP on Teemo).And now there is no more Orakles so you are even more safe when you are in stealth.Just be careful cause there is one trinket and Vison wards that will make you visible.

Teemo is also so little and underrated so nobody will think you are that tanky ^^.
And then you will bet them up sooooooooo much xD