CONTROL WARDS AND WHAT THEY REVEAL
I'm DONE having these arguements in game, so everyone thats GOLD AND BELOW needs to LISTEN UP because if you call me a 'Brainless retard' for saying "Control wards don't reveal SHACO" then really you're the problem.
The wiki states that Control wards. "Control Wards reveal and disable wards, reveal camouflaged units and stealthed traps."
That includes any enemies' abilities that have a visibility distance ring around them. They include but are not limited to

Stealth is not camouflage. It states very clearly in the wiki that Control wards reveal CAMOUFLAGED enemies, not stealth ones. A control ward cannot reveal

Please take note in this, educate yourself, and stop acting like a righteous dipshit in game when you're very provably wrong. It takes a very small amount of effort to look up control wards and find out what they actually do.
My source: http://leagueoflegends.wikia.com/wiki/Control_Ward