Wearing deerskin,
this shaman
sits at his cauldron, beating his bodhran drum to call to the spirits. He brews a potion that helps him engage the spirit world, and a few of the potion’s ingredients surround him, notably the sacred herb vervain.
The path of the Celtic shaman was strongly tied to the land and the cycle of the seasons. By honoring the spirits of nature and learning their wisdom, a shaman sought to transform himself and expand his awareness. Conscious of the subtle connection between all things, Celtic shamans recognized the sacredness within everything, allowing them to form a bridge between the spirit world and the human world.
This shaman is shown brewing a sacred potion called the Cauldron of Ceridwen, which was believed to inspire eloquence and prophesy in those who drank it. This magic potion contained a number of ingredients, including rowan berries, sea foam, “Taliesin’s cresses, Gwion’s silver, flixweed, and vervain” picked on moonless nights (Franklin, 83). This potion was also used to create the Gwin or Bragwod drink used in sacred initiations, though the initiates drank it mixed with wine and barley meal.
https://www.dnfrost.com/2017/03/celtic-tarot-card-meanings-inspired.html