ultimatum modifier more rare monsters Bug Report ID: #3921348471

Bug Report ID: #3921348471
the ultimatum mod 30% more rare monsters and rare monsters have +2 modifiers doesn't seem to work properly?

I selected it in the first room of the trial and had 0 rares in any of the rooms, which i mean 30% more of 0 is still 0 but it seems odd for that to be a thing?