follow up post - used the hammer in a fight against 5 billion hoarder spiders and their mommy. I could use the double damage attack once during the fight.
the +1 metal per turn might be giving me one metal at the end of the fight, not sure. I will have to count totals before and after fight.
The extra metal i thought i was getting was actually arriving from 2 mines i built recently and had just started to ship metal lol.
So i would say this hammer is not very clear on the metal portion of its bonus. Do i have to sit with a hero in a city to get the bonus ?
Curious.