Great news. I just noticed that the new champion Kai'Sa has a lot of similarities with one of my champion concept: Aerith, The Scrap Genius. I am glad that Riot saw potentials in my concepts, and used them to develop new champions. I want to thank you for creating Suggestion Wiki - an amazing platform for creators like me to post our ideas.
Okay, so I created a Custom Champion draft, and hit Publish. I was then asked to contact the Admin (that's you, I believe) to approve the draft, because it is protected. After that, there's a "special page" that shows a list of local users. From that point, I just don't know what to do, so I decided to leave it as it is and close everything. :P
Template:Custom_champion is the only protected page on this wiki - which leads me to believe that you hit edit on that page and forgot to copy and paste it to a new page, and instead just created your champion there. I'm afraid there's nothing I can do about the content you've lost.
When you click to create a new article - there's now a link at the top to automatically put all the templates in your page. Hopefully this will avoid you making the same mistake again. Sorry about your lost content. :(
Sorry for messing up the Recent Wiki Activities. I forgot to check the "Minor edit" box, while making like 20 minor changes to my post in an hour. I'm not trying to make people read my article, it's just that I did not anticipate the consequences until I saw it myself. I'm new to this editing stuff, so please forgive me.