Efficiency

Level 4 of the Dungeon
(0, 0, D:4)
  15 gold pieces

Level 5 of the Dungeon
(0, 0, D:5)
  a +2 long sword of holy wrath

Level 6 of the Dungeon
(0, 0, D:6)
  11 gold pieces
(15, -15, D:6)
  a +0 dagger
(19, -13, D:6)
  26 stones

the Ecumenical Temple