NCF – Extended list of Neutral creatures.

No, I don't use NCF – it has a lot of unnecessary stuff (in my opinion), and you won't be able to play as the new units, and I don't care who I fight as neutral creatures. But if you could play as these new units (by creating external buildings for hiring them, similar to "Elemental Fusion" and "Refugee Camp"), then it would be a completely different story.

In short, I did as you said. I managed to copy the modified file into the archive, but when checking it on the Stalker map, they still appeared, despite the changes. This is just awful... Here's what the modified file looks like:
5
4
0
3
5
6
12
false
15

0
1
0
22
290
10
1
false
CREATURE_UNKNOWN
TOWN_DUNGEON

ELEMENT_WATER
ELEMENT_EARTH

7

0
0
0
0
0
0
100

false

1



0
CREATURE_SCOUT


ABILITY_POISONOUS_ATTACK
ABILITY_INVISIBILITY