This is just a simple list of counters. Most of this is obvious but this is mainly for beginners to learn what counters what. I only recently decided to write this simply because i thought it would benefit the lol community. Again i have to stress that for experienced players these are very obvious so please do not rate this down because of its simplicity. I purposely want it to be a simple list of counters. Lets begin!

Jax countered by Sword of the Divine
The Active of Sword of the Divine makes your attacks undodgable which is the anti Jax


Dr. Mundo countered by Ignite Explosive Shot Executioner's Calling
They all reduce healing effects which wounds Dr. Mundo's ult

Twisted Fate countered by Banshee's Veil
Banshee's Veil can block the sight making Destiny useless for scouting the enemy

Tryndamere countered by any type of stun.
If you can stun him before he uses Undying Rage then hes dead

Garen and any other high health champion countered by Madred's Bloodrazor
The passive eats their health away. It doesnt really show but its there

Rammus and other High armor champions countered by Black Cleaver OR Last Whisper
I do NOT recommend getting both. They in a way cancel each other out.

Karthus countered by Banshee's Veil or Quicksilver Sash
Both of them clear his Requiem

Ashe and other DPS champions countered by Thornmail
You literally kill yourself if you go up against a thormail. Never shoot a Rammus who is in defensive ballcurl and has a thornamil.

I know the list above is small but im going to publish this in hopes that you can think of some and ill add it to the top and give credits at the bottom