Vampirism mod adds a few rituals that allow you first become a vampire, and then raising its level, you will become stronger, faster, better to see at night, but to be a vampire, not just because you will have to avoid daylight to escape from the vampire hunters to die.
Witchery allows players to master the magical art of witchcraft and to learn to control the natural magic of the world Minecraft. Mod adds to the game all the things necessary to become a witch or warlock