How to play support Teemo
Get the bandit mastery then use all other points in offense, use full ap runes, go in game buy a spell thiefs edge, poke like HELL SATAN!!!!! If adc is in lane do NOT touch the minions, if he is recalling dead or running up lane farm like crazy, build a Rabadon's deathcap, build a runaans hurricane, by the time your runaans is done Laning phase is over, go farm till you have the same as adc or highe, backdoor like hell and murder the adc and top a couple of timeseach. That is all. Build a Nashors tooth, if the enemy has tanks build a BOTRK, if not a Ludens, then Sorcerers shoes, homegaurd or boots of speed homegaurd your choice, sell spell thiefs, build a BOTRK or Ludens depending on the previous item, also you dont have to buy wards because of ur ult and urs dmg the enemy!. Have fun with carrying as Teemo support