I got death threats from a player

i played the new nunu rework (first time i played it). I got qued with a four man premade three of them were very toxic towards me because i didnt know how to play the rework, I was in blind pick not ranked. The ez proceeded to add me after the game and told me that he is going to find me and slaughter me and that my mom should die in a fire, also that im a retarded downy. i reported and submitted a ticket before the death threat. The reason im putting this here too is so riot can see it. If a riot member sees this please get in contact with me.