Allowed items: ring, amulet, orb, staff
As conjurers are mostly using elemental damage types, a question naturaly arose
whether it is possible to get some protection against the same damage types.
Destruction always proved easier than creation or protection from destruction,
so it took a while to develop protective powers from destructive ones. But in
the end, the research had been successfull and this power has been created.
See also:
imbue cold protection