Haukur Halldórsson and his daughter Gunnhildur Hauksdóttir are Icelandic artists living and working between Iceland, Denmark and Germany. Both adhere to heathenry, or Asatru, as viewed by the Icelandic Asatru community. Halldórsson is one of the original members active in reviving the traditional Nordic mythology of Iceland in the seventies and has devoted his art to Nordic and Northern European mythologies and folklore. Hauksdóttir grew up in heathendom, surrounded by folkloric illustrations, stories, poems and nature.

For the Yggdrasil deck, father and daughter come/came together with illustrations and their readings to enable the deciphering of the message of the mythologies and folklore and to make it accessible for readers.