The Uraeus "/jʊəˈriːəs/;[1]", or Ouraeus (derived from the Ancient Greek word: οὐραῖος, Greek pronunciation: [οὐραῖος] (listen)); from Egyptian jꜥrt (iaret), "rearing cobra") is the stylized, upright form of an Egyptian cobra, used as a symbol of sovereignty, royalty, deity and divine authority in ancient Egypt.
It's amazing that some of the cards are derived from mythical and ancient beings, deities, etc..