Efficiency

Level 5 of the Dungeon
(0, 0, D:5)
  a scroll of enchant weapon
(3, -6, D:5)
  a potion of berserk rage

Level 6 of the Dungeon
(0, 0, D:6)
  14 bolts
(1, -4, D:6)
  an arrow
(2, -8, D:6)
  a +0 ring mail