Insane Additional Variants

Changed the way creatures spawn. Essentially they have been added to the spawn entries for specific locations.

Nature Thyla - Spawns where Thylas spawn
Abb Carchar - Spawns where Giga spawns
Abb Giga - Same as above
Abb Styrac - Spawns in Grasslands
X-Styrac - Spawns in Jungles