Lich

Level 1 of the Dungeon
(0, 0, D:1)
  a potion of mutation
(4, 4, D:1)
  a +0 leather armour
(7, 3, D:1)
  a bat corpse
(15, -10, D:1)
  a +0 ring mail
(17, -14, D:1)
  a bat corpse