Cthan

Level 1 of the Dungeon
[Shop] Mecsopnu's One-of-a-Kind Rings
  a +7 ring of protection (1138 gold)
  the ring "Ydicacux" {Will++ rCorr} (451 gold)
    [ring of resist corrosion]
    
    rCorr:     It protects you from acid and corrosion.
    Will:      It greatly increases your willpower.
  a +3 ring of dexterity (110 gold)
  the ring of Zin's Grace {Fly Str-2 Int+6} (361 gold)
    [ring of flight]
    
    Str:       It affects your strength (-2).
    Int:       It affects your intelligence (+6).
    Fly:       It grants you flight.
  the ring "Reunuhau" {rElec rPois rC+ Str+6 Int+2} (719 gold)
    [ring of strength]
    
    Str:       It affects your strength (+6).
    Int:       It affects your intelligence (+2).
    rC:        It protects you from cold.
    rElec:     It insulates you from electricity.
    rPois:     It protects you from poison.
(0, 0, D:1)
  a +0 sling
(4, -2, D:1)
  a +0 club
(16, 6, D:1)
  a book of Flames
(17, 27, D:1)
  a +0 club
(18, -7, D:1)
  a +0 dagger
(26, 33, D:1)
  a +0 club
(28, 23, D:1)
  a +0 club
(36, 10, D:1)
  a +0 dagger
(39, 20, D:1)
  a book of Touch

Level 2 of the Dungeon
(12, 1, D:2)
  a +0 flail
  a +0 chain mail
(14, -25, D:2)
  a +0 short sword
(15, -3, D:2)
  a +0 hand axe
(21, -14, D:2)
  a +0 sling
(21, 0, D:2)
  a +0 plate armour
(29, -13, D:2)
  a +0 club
(30, -15, D:2)
  a +0 dagger
(34, -42, D:2)
  6 poisoned darts
(37, -40, D:2)
  a +0 club
(46, -43, D:2)
  a +0 robe
(49, -33, D:2)
  a +0 sling
  a +0 club

Level 3 of the Dungeon
(0, 0, D:3)
  a +0 ring mail
(5, -25, D:3)
  3 gold pieces
(9, -35, D:3)
  a +0 dagger
  a kobold corpse
(10, -19, D:3)
  5 poisoned darts
(11, -19, D:3)
  a +0 hand axe
(13, -20, D:3)
  a +0 dagger
(14, -28, D:3)
  a rat corpse
(32, -18, D:3)
  a +0 whip
  a kobold corpse (skeletalised by now)
(42, -32, D:3)
  a +0 spear
(48, -29, D:3)
  a +0 club
  a +0 ring mail