Witchery is a mod by Emoniph. It adds magic type things into Minecraft
Witchery Mod Tutorial - Altar
Witchery Mod Tutorial - Distillery and Brewing
Witchery Mod Tutorial - Brews in Full
Witchery Tutorial - Mutations - Minecraft Mod
Witchery Tutorial - Circle Magic Chalks and Items - Minecraft Mod
Witchery Mod Tutorial - Circle Magic Rites and Covens - Minecraft Mod