Remove Shaco [or something] in Norms... but for a different reason
Toxic Shac Shaco - Guides/Builds - League of Legends
I'll keep it simple;
He's a toxic addition to the game that either snowballs or feeds, that either ganks or steals your buffs, that serves to pub-stomp people who can't fight him and feed those who can.
He's the epitome of most of what Riot said they absolutely hate in games; Snowballing, pub-stomping, toxicity and a frustrating skillset to play against.
And yes, he's easily countered by control wards - but... again, he serves to fight the people who can't buy them.