The Challenge #2: Recognise all of them

[RC_4777]

God. That is going to be pretty hard. Good luck though.

 

[loic1212]

10-11 butterfly kog' maw and dead reaper Karthus.
41- Pantheon 42-
Scarlet hammer poppy
I will ve updating this one or double posting

 

[MJM239]

That, is cruel. Absolutely cruel.

But amazing.

Since I don't have the ridiculous amount of time to help solve that, good luck to those who can...

 

[JaysWing]

#2 is Executioner Mundo, I believe.

EDIT: #10 is Butterfly Kog'Maw. #18 is Sejuani in her default skin.