An absolute black or pure white gown embroidered with arcane sigils that seem to have shifted when nobody was looking.

It has no effect if armor is worn, but when active it will grant two effects:

1. The gown can store an invocation that was discarded upon level up by an Attuned Warlock. It stays until swapped out or the gown is destroyed.
   1. Example - Lifedrinker Invocation: It cannot be used without the Pact of the Blade feature, but can be used at level 5 if it was previously stored in the gown.
2. You can cast a spell from an invocation that requires a Warlock spell slot as an Action without having to expend the spell slot. You can do this once per Dawn(White) or Dusk(Black)
   1. Example - Mire of the Mind: Cast Slow as an Action without expending a spell slot. The gown must recharge, and you cannot cast it again until you finish a Long Rest. 

Notes: Requires Attunement by a level 5 or higher Warlock