So I had a stack of about 16-30 Battlemasters and my hero Bambur about to attack a city, when I cast my world spell. I combined the wolves into two separate wolf packs, and each had a strength of about..
55?!
55 Strength wolf packs!
They were pretty much immortal at that point, and honestly at any point, with their high movement and capacity to create even more wolves. I think that this has to be a bug with how the levels and promotions of the units that create them stack, because I can't see anything standing up to strength 55 wolf packs around the time that Iron Working is being researched. I can submit a picture or a save with this, if it would help.
55?!
55 Strength wolf packs!
They were pretty much immortal at that point, and honestly at any point, with their high movement and capacity to create even more wolves. I think that this has to be a bug with how the levels and promotions of the units that create them stack, because I can't see anything standing up to strength 55 wolf packs around the time that Iron Working is being researched. I can submit a picture or a save with this, if it would help.