Dominions 5 Wiki

Rusty armor can be damaged if it takes a hit in combat.

Chance for Rusty armor to be damaged = damage inflicted (before armor protection, but after shield protection) * 2%.

Rusty weapons have a 25% chance of being damaged when they inflict a hit on something. Damaged weapons have their damage reduced by 2, except for blunt weapons which have their damage reduced by 1.