Efficiency

Level 5 of the Dungeon
(0, 0, D:5)
  18 stones

Level 6 of the Dungeon
(0, 0, D:6)
  12 sling bullets
(0, 11, D:6)
  12 poisoned darts
(0, 12, D:6)
  a +0 robe
(39, -4, D:6)
  an adder corpse

Level 7 of the Dungeon
(0, 0, D:7)
  a +0 mace

the Ecumenical Temple