Upcoming Champion info

There have been a new threads here and there regarding the new champion so I thought I'd just throw them out here

Something hiding in the brush- A week or two ago, players began hearing noises coming from bushes on Summoner's Rift that sounded like a bird or a dinosaur. Considering Riot had done teasers like this before (marking dead players with Mark of Kindred, showing Bard's mask on walls and rocks) it was a safe assumption a new champion was incoming.

Reddit "leak"- A few days after the noises began, a redditor made a post about leak on the upcoming champion. They said it was a dragon/ bird support champion whose ultimate would allow teammates to ride it. However, there were no real sources and the claim seemed a bit far fetched until...

Kled Papers- Many people in the LOL community kept talking about these Spanish "kled papers" that kept appearing (the latest is in the link). The first of which was found in a Spanish Esports bar and said "WANTED that coward. You bastard, always** running and hiding in the bush**! In the river battle he will escape. He is always escaping!!" The newest shown in the link even said "Saddle and magical mount wanted. Runs tirelessly and straight," possibly eluding to the ultimate hinted at earlier.

This is just just the info out there now, thought I'd put it all together for convenience's sake.