| The synergy works like this:
The more surges the defender has, the more surges anyone in the party can have, due to their recharge ability for their healing option.
Also there is an armor that gives you half the temp hp that someone else gets. I can't remember its name but with the temp hp healing power artificers have the artificer in our party can give me 50 temp hp and a party member 25 temp hp for each of the 17 healing surges I have (we are level 18). Its essentially a VERY good mitigation synergy.
I really wish I could remember the name of the armor, but I got nothing (we all found it up thursday) | 
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