Nether

Magical is a Better Spawner Category that contains by default the following biomes:

Vanilla Biomes

Biome	Biome ID
The Nether	mincraft:hell

Biomes O' Plenty Biomes

Biome	Biome ID
Corrupted Sands	biomesoplenty:corrupted_sands
Fungi Forest	biomesoplenty:fungi_forest
Phantasmagoric Inferno	biomesoplenty:phantasmagoric_inferno
Polar Chasm	biomesoplenty:polar_chasm
Visceral Heap	biomesoplenty:visceral_heap
Undergarden	biomesoplenty:undergarden