How to auto buff all party members?

[atleast100 0]

I can't figure out how to get one character to buff all party members and himself, and rebuff any party member or himself when a buff runs out. What I tried to do with the mage is add a second arcane intellect to the spell list that the mage would cast on himself under the condition that all party members were buffed first... it works, but then if arcane intellect runs out on a party member, he won't rebuff them unless his own buff is gone too. What I want it to do is rebuff party members even if the mage's own buff is still active, and also rebuff himself if his own buff runs out first. Here is the script, if anyone can help me 

mage.xml