DLC_03 Loot Pack Bug - Enzo's Knife doesn't appear to subtract 1 Armor per hit
Enzo_Effect, a spell ability for Enzo's Knife that is meant to reduce armor by 1 for each successful attack, doesn't appear to do so (no change to the defender's armor stat and no apparent change to the amount of damage done by the Knife).
There is a bug either in the XML code or the supporting hard code for items that reduce armor (as far as I know, if an item attack reduces or increases a stat, it will always show an effect on the unit information in battle).