Updating BOP Spawn rarity

Adjusting the rarity of spawned monsters from BOP
MoCreatures Spawn Adjustments

Decreased the spawn of Big Golems and Ogres. These are very disruptive
mobs. Having them around is cool, but one encounter goes a long way.
Disabled BOP Birds

Mo Creatures and Project Zulu both include birds. There’s no need for
yet another bird mob.
Adjusted Natura Nether mob spawn rate

Natura’s various nether mobs were set to spawn-parity with the rest of
the nether. I toned them down a little. Further adjustments may be
needed.
Disabled Project Zulu Horses

With the competition between Mo Creatures and Zulu, a number of Zulu
mobs will be disabled. If a mob is different enough, and not in
competition with the one from Mo Creatures, it will be kept.
Disabling competing Zulu Mobs

I disabled the spawns on several Project Zulu mobs that are
over-similar to ones from Mo Creatures. I did this at the “Should
Spawn” level, instead of doing it by reducing them per-biome. Good to
remember that this feature is present.
Finished adjusting Sandworm Spawn

Sandworms were showing up too frequently, and in a number of non-sand
biomes. I’ve made them a lot rarer and restricted them to desert
biomes. This should make them a nice surprise for players when they go
somewhere sandy.
Increased Thaumcraft Zombie Spawn

I upped the spawn rate for Thaumcraft’s briany zombies. Additionally, I
added them in to all biomes. I generally want skeletons, zombies, and
similar mobs to be universal elements. Present everywhere.
Adjusted Nether Spawn

Vanilla Nether can be creepy, but it’s ultimately quite dull. Nothing
but Pig Zombies as far as the eye can see. I’ve turned the spawn rates
for Pig Zombies and Ghasts through the FLOOR (previously 100 and 50, on
a scale of 1 to 10).

I also added Zombies and Skeletons to the Nether to make things more
interesting. Further adjustments may be needed.
Fixing up Undergarden spawns

Several mods think that the Undergarden is some kind of forest… but
it’s in the nether. So having it teem with life is a little silly.