Wirts Leg, Tome of Town Portal -> Red Portal to Secret Cow Level
Perfect Gem of each type except Skull, Amulet -> Prismatic Amulet - 18-24% Resist All
3 Perfect Gems: same type, 1 Magical Item -> 1 Random High Level Item
6 Gems: any type or quality, 1 Sword -> 1 Socketed Longsword
3 Gems: same type and quality -> 1 Gem of next higher quality
1 Ring, 2 Topaz gems -> 1 Coral Ring
1 Ring, 1 Sapphire, 4 Thawing potions -> 1 Cobalt Ring
1 Ring, 1 Ruby, 4 Exploding potions -> 1 Garnet Ring
1 Ring, 1 Emerald, 4 Antidote potions -> 1 Viridian Ring
3 Rings -> 1 Amulet
3 Amulets -> 1 Ring
3 Healing Potions, 3 Mana Potions, 1 Gem -> 1 Full Rejuvenation Potion
3 Healing Potions, 3 Mana Potions -> 1 Rejuvenation Potion
1 Healing Potion, 1 Strangling Gas Potion -> 1 Antidote Potion
1 Spear, 1 Quiver of arrows -> 1 Set of Javelins
2 Quivers of Arrows -> 1 Quiver of Bolts
2 Quivers of Bolts -> 1 Quiver of Arrows
1 Axe, 1 Dagger, 1 Stack of Throwing Knives -> 1 Stack of Throwing Axes