Manta

Level 1 of the Dungeon
(0, 0, D:1)
  a dart slug corpse
(1, 0, D:1)
  a stone
(3, -2, D:1)
  a stone
(3, 0, D:1)
  17 gold pieces
(4, 1, D:1)
  a potion of agility
(8, 7, D:1)
  a rat corpse