It was my mistake initially. I misunderstood.
Added 48 seconds later
The link gives an error.
Added 59 seconds later
And why 180? In the basic NSF, there were up to 999 slots, right? Or am I mistaken?
I removed the link; I don't understand why it's giving an error (well, it's a link from the Heroes 5 Library topic).
I, of course, enabled 999 slots. But this is the first NSF creature, at position 180.
Added 22 hours 36 minutes later
Creature 181: Golden Dragons

Creature 182: Obsidian Dragons