Nagash, Supreme Lord of the Undead

The armour of Nagash Supreme lord of the Undead has gradually fused with the body of its wearer so that the two are now united for all time.

The Black Armour gives Nagash a special saving throw of 4+ against any wounds scored against him.

In addition, the Black Armour gives Nagash a D6 saving throw of 4+ against the effect of any magic spell. Note that this isn't a Dispel, but allows Nagash to avoid the effect of spells which would otherwise harm him.