This is an AD Temmo Guide. An AD Teemo do continuous dmg in contrast to an AP or hybrid Teemo which do more burst dmg. I dont say that AP or hybrid Teemo is useless , an AP or hybrid Teemo do tonnes of dmg with his abilitys but who walks into 5 shrooms in a Teamfight? I also tryed to play AP and hybrid Teemo but I felt so useless in Teamfights :(
It is your choise how you play Teemo but AD is imo the best way to play Teemo!!

Read this Guide, test it and you will be stoked!!

Pros :
-very funny to play
-good map-control
-easy to kill AD carrys
-good Baron and Dragon control

Cons:
-squishy

Offensive Runes:
Greater Mark of Desolation + Greater Quintessence of Strength
-early game harass
-easier to pick up last hits

Defensive Runes:
Greater Seal of Resilience + Greater Glyph of Warding
- give you good survivability in early game
which is important for Teemo because of his sqishyness

My skill order is very offensive.
-I dont skill Lathaly because I got no crit chance
-Improved Ignite for the 10 AP which is pretty good for his abilitys
-Magic Pen because Teemo do based Magic Dmg
-Amor Pen skales good with your black clever
-max. Good Hands for shorter deadtimes

Teemo has a good Laning Phase. I play Teemo on the bot Lane with a Supporter by my Side. Dont overrate youself. Play a little bit defensive and go for last hits untill u are lvl 6. Now u got your amazing Map-Control. Place your shrooms all over the river. Your shrooms will protect you from river ganks. Now it is time to play more aggressive. Try to harass your enemys and pick up some early kills with Flash and Ignite. If its possible ask ur jungler for redbuff. Now you can blind and slow your target. And dont forget the DoT which skales amazing with your Toxic shot.

You will be the first target for tanks and assasins. Your Job is to kite them through you shrooms and maybe kill them. If your enemys are stupid and u will not get focused... destroy the hole enemy team!! With your Blinding Dart it is easy to kill the enemy AD Carry and with your Malady and your Bloodrazor it is also easy to kill the enemy Tank.

This is my way to play Teemo. Test it and u will see it works!