Hi! First of all I want to thank you, 
Aternos Team, for all the work that you do for us.
Just started some days ago with plugin development and I wanted to let my friends play with my plugins.
I was organizing my next private UHC, but we wanted to make things more fun to play and to add some plugins.
So I created this.
It will not be used only for the UHC, though. I think that I'll use it also for my next survival, hosted in Aternos too.
Plugin Name : DanielVip3's Everything Plugin
Plugin Link : click!
Description : As I said, that's a plugin of mine. It just adds some "combat skills", like stunning snowballs and something like that, inspired by JoJo Stands. I want it to play with my development in Aternos with my friends.
I can guarantee that this plugin doesn't contain nothing that can hurt your servers. If you want, you can decompile the .jar file and check by yourself, they're only a few classes.
P.S. There you can see some others clarifications : click!