Bukkit

What is the enhancement in mind? How should it look and feel?

Hey there, coming from a HTML background, I don't know much about Java plugins, but I was wondering if it would be possible to keep the buffs when switching worlds (eg. teleporting to the End makes me lose all the effects).

Would it be possible to also add a permanent effect? Or auto-renewing potion skills?

One last question, how can I change the aliases so that I can have specific mods for each attribute?
Here's what I mean:

/buff daemon --> That gives you strength III and slowness I.

As of now, the modification level only makes it so that if I put "3", it will make me have Strength 3 and Slowness 3.

Please provide any additional information below.

Thanks so much for your time!