Alfheim is an add-on to Botania, allowing you to build a portal to Alfheim - one of the nine worlds of Scandinavian mythology, populated by light alvs, otherwise known as elves. There you can find all the materials that otherwise can only be obtained through a special trading gate. Explore the world, learn the story of Alfheim and discover the secret elven technology of mana-infusion. Everything you need to know about this add-on you can find in your Lexicon - in-game manual from Botania.
Please,add - https://minecraft.curseforge.com/projects/alfheim