How to counter KARTHUS "The Deathsinger"

 KARTHUS willingly gave up his mortality to shadow isle to embrace undeath and in the process was twisted in a powerful lich, today he drift through Runtera offering a eternal unlife to the living masses. 

In game Karthus is a solo lane mage or a jungler capable of dealing devastating Area of Effect (AoE) damage to his surrounding enemies before unleashing his iconic ultimate ability on opponents near or far.

The Question is, How will you stop Karthus on dealing devastating Area of Effect (AoE) damage on your team? And his Iconic ultimate ability, how will you avoid it? I suggest to pick a champion that has an ability to assassinate Karthus in a blink on an eye, and to avoid his iconic ult ability I suggest to Zhonya's Hourglass to make you invulnerable in a few seconds.

So, Here are the champions I suggest.

First is KATARINA "The Sinister Blade"

Second is FIZZ "The Tidal Trickster"

Third is Lux "The Lady of Luminosity"

Note: Suggestion only, you can use all the champions you want to chase or counter KARTHUS at Mid lane. (It depends on your gameplay).

Next to counter: SOON !!!