Mytherceria is the unique discipline of the Kiasyd bloodline in the Vampire: The Masquerade role-playing game. The Kiasyd, a bloodline resulting of a bizarre experiment carried out by members of Clan Lasombra involving Fae blood and mortal magics, manifest this discipline as an expression of their Fae heritage. It allows them to trick and confuse those around them, producing effects common to traditional faerie powers. At higher levels, strange effects involving stone and wood can be achieved.