I'm suffering a mental block here - what is a magic item's base save vs the Mordenkainen's Disjunction spell? What page in the DMG/PHB is this info located? Or, where in the SRD?
Nonmagical, unattended items never make saving throws. They are considered to have failed their saving throws, so they always are affected by spells. An item attended by a character (being grasped, touched, or worn) makes saving throws as the character (that is, using the character’s saving throw bonus).
Magic items always get saving throws. A magic item’s Fortitude, Reflex, and Will save bonuses are equal to 2 + one-half its caster level. An attended magic item either makes saving throws as its owner or uses its own saving throw bonus, whichever is better.