Didn't find a welcome script here(sorry people if I didn't see yours) but here it is just incase you didn't find one or if you don't know how to make this. This script could sorta spam people a bit who have long auto join's. So be aware...
Credits to Velosis for making the script, I just edited it out. I like all the if's because it feels easy to edit out, I could put it in a file but I don't feel like it :).
Awesome was a really popular script on my IRC but the one who made it left. So I decided to re-create it. It is very simple and meant to be that way. !powerlevel is one of the popular scripts as well, but just decided to create it.