Is this card going to be worth putting on any secondary that has 4 attack or greater? How often are you going to completely whiff with four attack dice? The only two ordinances I could see this card be worthwhile is the Ion missiles and fletchette torps. Not that 1 point is a huge investment, but if you put it on Protons, then you have a 5 point proton torpedo. That could very well give you one hit.
Also, does it work with Bombs?