Vampirism and Howling Moon
This modpack allows you to take the place of a Werewolf which forces you to take the role of a werewolf when a full moon rises. Werewolves can only be harmed by Silver which is a new ore which was added to the game. Another Supernatural lifestate which is included is Vampires! The Vampirism mod includes two different teams/sides, The vampire hunters and the Vampires. As well as increasing the village spawn rate each village will be controlled by Vampires, Vampire hunters or the village will be neutral. Vampires must progress by collecting blood and performing rituals while Vampire hunters must slay Vampire barons in order to collect their blood to pay other hunters for training. Each side has a skill tree which allows them to learn new skills and become more powerful. The same applies for Werewolves but they only have to kill in order to gain experience and skill points.
Botania, Electroblobs Wizardry and Thaumcraft.
However, if you wish to avoid becoming a Werewolf or Vampire. You can become a wizard, in the wide variety of mods that allow you to become a wizard with tons of spells to learn and master. Electroblobs wizardry has Wizardry progression which allows you to craft your wand and slowly learn spells and specialize in different types of Wizardry such as Necromancy! In Thaumcraft you can use magic to kill mobs and get items, there are new Biomes like the Tainted Biomes. Thaumcraft adds a new dimension: Eldrich, a labyrinth full of tainted mobs and Boss. With all these supernatural and unique forms of magic. There is a natural way to learn magic which is Botania! You can create magical flowers to utilize the pwoers of the earth in the form of mana. That lets you learn more natural forms of magic.
Dragon Mounts 2 and Lycanites Mobs
Finally, if you aren't intrested in magic, Werewolves or vampires you can instead find some a dragon egg and raise your own dragon as well as crafting armour and tools out of their scales. And some types of armour give special abiltiies such as Water dragon armour gives you the ability to breath underwater. And the last mod in this modpack is Lycanites Mobs which adds lots of new dangerous mods to minecraft which adds more of a challenge to the game. Especially when your trying to explore the nether.