Uifghx's Warrant (5e Equipment)
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Wondrous Item, rare (requires attunement by a warlock)
The warrant has 1d4 + 1 charges. While this warrant is on your person, you can use an action to speak its command word to expend one charge and regain one expended spell slot from your Pact Magic feature.
The first time you regain a spell slot with the warrant, you hear a constant whispering noise from your surroundings, and your mind suffer an eldritch stress and terror as the noise intensifies, taking 2d8 psychic damage for each level of the spell slot you regained. Each time you regain a spell slot again before finishing a long rest, the psychic damage per spell slot increases by 1d8. This damage ignores your resistance and immunity.
The warrant regains 1d4 expended charges daily at dawn. If you expend the warrant's last charge, roll a d20. On a 1, the warrant crumbles into dust, spraying pitch-black and foul-smelling ink all over the place.
An old, battered parchment with faint scribbles all over its surface. A careful examination reveals that the scribbled words are various, if not all, known languages in all known scripts, and for some reason, all misspelled. An even closer look also reveals that the scripts are, slowly but surely, shifting around the surface, reforming other (also misspelled) words in a roughly 24-hour routine.
Thaumaturgists identify this mysterious script as a gift from Uifghx, an obscure entity from distant realms that is vaguely known as the Lord of Randomly Placed Typeprints, often associated with the Cryptic Demiplane of Fhwtxyh-H'Tw.