Teemo, and the importance of counterplay.
I'm a Teemo main with over a million mastery points, and have been playing for a couple years. I play Teemo into every matchup, I've tried all the runes, and all possible builds, but I don't consider myself anywhere near the best. Top 5 Teemo players of all time are iPav, TheRainMan, HangSim, Hikashikun, and Manco. Even though Teemo has a stable winrate of 50%, he is not viable in high tier, because AD/tank Teemo isn't practical with the removal of Fervor of Battle. AP Teemo is the only real choice, and his kit has too many ways of being countered. I suggest a Teemo rework, or returning old items such as Atma's Impaler or Banner of Command.
In addition, there are FREE RUNES that can DIRECTLY COUNTER Teemo. Legend: Tenacity can give you 5% permanent tenacity + 2.5% for every legend stack (max 10 stacks) reducing his blind duration even more. Nullifying Orb is a free Hexdrinker, and Second Wind is a free Doran's Shield.
ITEMS TO COUNTER AP TEEMO:
FREE - exposes traps (HIS ULTIMATE)
75g - ^ without the cost of yellow trinket
450g - stops some of his poke in lane
1100g - reduces his blind and slow duration by 30%
1200g - stop most poke in lane
1300g - if taken below 30% hp by magic dmg, you will gain a shield for 5 sec
1300g - removes all cc debuffs
2800g - direct counter to his poison and Liandry's passive
2800g - tank/lifesteal champs never die now
2850g - I want to be Garen
2900g - passively exposes traps
3000g - negates his next ability
3000g - ^
ITEMS TO COUNTER AD/AS TEEMO:
1100g - reduces all basic attack dmg by 12%
1000g - being hit by basic attacks, reflect 3 (+ 10% bonus armor) magic dmg, while inflicting Grievous Wounds 1 sec (reduces all healing received by 40%)
1000g - being hit by basic attacks cripple source's AS by 15% for 1 sec
2700g - cripples nearby enemies' AS by 15% (700 range)
2900g - being hit by basic attacks, reflect 25 (+ 10% bonus armor) magic dmg, while inflicting Grievous Wounds 1 sec (reduces all healing received by 40%) + being hit by basic attacks cripple source's AS by 15% for 1 sec
2900g - -20% crit dmg + being hit by basic attacks cripple source's AS by 15% for 1 sec
