Undead Skeletons

Using the Rowan Staff, carved from the Rowan Tree on the Isle of the Blessed given to her by Morgause, Morgana was able to bring life to the dead of Camelot and use them to fight the Knights of Camelot as they fought the armies of Cenred in the Great Battle for Camelot. Although Morgana wasn't a experienced Witch the Staff's power helped. The undead army were all skeletons and could be reduced to piles of bones, however these bones would continue to fight. After Merlin destroyed the staff, the undead army was reduced to dust (The Tears of Uther Pendragon).