TEXT: Magical Items of the Obscure Variety
  Not your average shop
  You desire to make a purchase...
  The Stash
  You desire to craft...
  The Splitter
  Using the Splitter
  Ophelia has a Dagger of Venom. She puts it into
  the Splitter. First, she gets back the actual
  physical dagger, now nonmagical, identical in
  appearance. The first component that appears is
  the +1 to attack and damage rolls ability,
  shortened to "+1 Attack". Next, the component
  for the activated poison ability appears. While it
  can only be fully defined with the exact
  paragraph describing the Dagger of Venom, it
  can be shortened to "Venomous". There are no
  other properties to the item, but by its rarity 3
  components define it. As such, a third
  component is outputted, consisting of pure
  magical power. This "Neutral" component is
  useful in the Forge.
  Rarity:
  Components:
  Common
  1
  Uncommon
  2
  Rare
  3
  Very Rare
  4
  Legendary
  5
  Unique
  All
  
  The Forge
  Create the Perfect Item
  Time to pay up
  Crafting Tips
  Forge Example
  Ghesh has a crossbow. He wants to make it
  magical, so he puts it into the Forge. He has a
  "+1 Attack" component and a "Venomous"
  component Ophelia gave him from a Dagger Of
  Venom. He wants to add them. He needs to
  spend enough for two components. To add the
  first, he puts the "Neutral" component from the
  Dagger Of Venom into the Transmuter. That adds
  the "+1 Attack" component. He then purchases
  an Arcane Capacitator for 1 component, which
  costs 10 gold pieces. Ghesh waits while the
  Forge applies the components. He now has a
  Crossbow of Venom.
  
  Inventory - Summary
  The Items
  Khadath's Lenses
  Keystone of Tlutlh
  Arcane Nullifier
  Curious Dagger
  Forbidden Tome
  Item
  Cost
  Khadath's Lenses 500 GP
  Keystone of Tlutlh 750 GP
  Arcane Nullifier
  250 GP
  Curious Dagger
  None
  Forbidden Tome
  None
  Trade
  Quest
  None
  None
  Magi-lock
  None
  Any Scroll Abandoned Lab
  Blade, Hilt Ancient Armory
  None
  Noble Library
  Item
  Cost
  Ancient Tablet
  500 GP
  Opalescent Eye 1000 GP
  Yld's Mechanism
  None
  Darkened Crystal 500 GP
  Bronze Chalice
  250 GP
  Trade
  Quest
  Restorer Tools
  Dig Site
  Any Rare Item
  None
  Mysterian Key Mysterium
  Repository
  None
  None
  Old Temple
  
  Items
  Ancient Tablet
  Opalescent Eye
  Mechanism of Yld
  Darkened Crystal
  The Chalice
  To the Dungeon Master
  This can be used in any setting. The shop can be in any city,
  or in a secret, hidden area in the wilderness. The quests are
  generic, and are meant to be a jumping point for the
  dungeon master. I do not recommend giving the players
  unrestricted access to this; instead, feel free to limit access
  to certain items and information.
  
SOURCE: textdata/thevault/Dungeons & Dragons [multi]/5th Edition (5e)/3rd Party/DMsGuild/Magical Items of the Obscure Variety v2.pdf