Best 4 person all caster/priest group

[PatChapp]

There's a couple spots where ide rather the druid,and a couple where the shaman will do better.
The group of 4 could do gwurms with the shaman tanking,for instance.
I think in chardok I would prefer the druid.
Most seb camps I would take a necro.

Only one I would I would want the mage would be chardok Royals. Mage makes that camp much easier.