Champion reclmmendation with high damage input

I'm new to the game and haven't bought too many champions yet. Could anyone recommend a champion to buy who can deal a lot of damage in a short amount of time but still isn't a slow tank? I like to play wukong because he can quickly kill enemies while still being agile and not slow. It doesn't necessarily have to be a specific role or melee or anything like that, as long as i can deal a lot of damage and potentially kill enemy champions.

Edit: I just found out that i am describing burst damage. So in short, I'm looking for a champion with high burst damage.