What champion should I buy next?
I don't own

I don't own

Anivia, twitch, malzahar, and trundle. Anivia the undying bird of death Twitch the ooops I just killed your entire team malzahar the what's an adc? Trundle the I'm going to club everyone to death then dance on their corpses.

We can't give you any specific or good advice unless you help us find out what suits you best:
Etc etc etc.. once we know a bit more about you, we can give you better tips on who to play!

If you become a master bard now, people will say you are really good when they realize how good he is. like gnar.
If you really don't want
Try
or 
Sej if you like jungle, shes a monster after you hit 6
Gotta say Anivia. Not enough Anivia players out there, let alone good Anivia players.
A fed anivia is scary :/
Buy Jinx, wth are you doing with your life
Thank you for the input. I'll take it into consideration
What do you main and what do you play most currently? The decision should either be a champ that is similar that you might enjoy as an alternative to give a bit of variation in your main role while still keeping the play style you are strongest with, or it should go the opposite and fill a play style you don't play much currently, but that might fill a gap in terms of what you want/need to play more to fit the team comps.
You're a top main and you don't play Tree? Shame on you. He's good, sure, but he's also a delightful character.
for sure.
My second choice would be Jericho Birdman, Tyrant of Noxus. He's a fairly unique champion.
depends what you enjoy playing more. i would personally get jinx, cass, malphite or malz