An Afanc is a creature conjured using the Magic of the Elements of Earth and Water.
History
Nimueh creates Afanc.
The High Priestess Nimueh created an Afanc, magically transporting it inside an egg to the water supply of Camelot, where it hatched and caused a plague. Eventually, Arthur 's manservant, Merlin, and the court-physician Gaius discovered the Afanc. With the help of Arthur Pendragon and Morgana, Merlin was able to destroy the creature using his own elemental magic (The Mark of Nimueh).
Properties
Afanc's mouth.
The Afanc can only be defeated with magic, specifically the use of the oppositional base elements of Fire and Air. The Afanc is said to be a beast born of clay and conjured only by the most powerful sorcerers. In fact, Nimueh shaped a piece of clay into the figure of a small animal while chanting a spell ("Ic acennan eowic ac ic hredde eowic"). She put in into an egg saped box with markings on it, including her mark, then droped it into a pool of water leading it to Camelot's water source.
Myth
The Afanc (Avanc, Addanc) is a creature from Welsh folklore that lives in lakes. In most myths it is described with the body of a beaver and the head of a crocodile. The Afanc is sometimes said to have magical powers and even the ability to speak Welsh. 
| Series 1 Enemies |
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| The Dragon's Call: Mary Collins † • Lady Helen (indirect) † Valiant: Valiant † • Devlin • Serpent Shield The Mark of Nimueh: Nimueh † • Afanc † The Poisoned Chalice: Nimueh † • Balorian Spiders • Cockatrice Lancelot: Griffin A Remedy to Cure All Ills: Edwin Muirden † • Elanthia Beetles The Gates of Avalon: Sophia † • Aulfric † • Sidhe elder The Beginning of the End: Uther Pendragon † Excalibur: Nimueh † • Tristan de Bois † The Moment of Truth: Kanen The Labyrinth of Gedref: Arthur Pendragon (indirect) † To Kill the King: Tauren • Morgana † • Uther Pendragon † Le Morte d'Arthur: Nimueh † • Questing Beast • Kilgharrah |