This is my first build so I hope you like it. This guide is for an on-hit Teemo.

The general idea is to build attack speed early on. Teemo's individual attacks generally don't do much, so attack speed helps to compensate. Later on in the game you might want to substitute other items for Guardian Angel or Frozen Mallet according to what you need.

The abilities are in order to max Teemo's poison first so that you can kill enemies after they get out of range. Your q is used to blind the enemy, so it's a good idea to use it as often as you can to prevent the enemy from farming. Use Teemo's w to move around the map quickly.

Teemo is a great counter to ADC because he can blind them so they can't do any damage. It is common that Teemo is focused in team fights really just because he's so annoying to play against. Constantly place shrooms in: the entrances to the lanes, the jungle, the dragon, and the Baron. Also, placing shrooms in bushes can prevent ganks from the enemy team.

Teemo is an excellent farmer because of his e and his ult. While you do want to last hit minions, it is a good idea to hit random minions that are not being focused by other minions to help quickly eliminate the wave and often get the kill with your poison. If you see a minion wave pushing a tower, then run over there and place a shroom in the middle of the group to poison and slow them. Also, placing shrooms in the middle of the lanes is a good idea to prevent minions from pushing a tower.

Teemo is a great champion to play as if you know what you are doing. Remember that he is a squishy champ, so treat him with due caution.