Fragment of Makroqosm (Fragment of Qosm):
Wonderous Item, very rare, requires attunement
A small, snow-white piece of the entity known as Qosm, the “Great Whole”. While attuned to this item, the user may cast Crown of Madness, Evard’s Black Tentacles, and Darkness at their lowest level at-will. Once per day, the attuned creature may cast the spell Crown of Stars as a 7th level spell.
Gaodhan Pendant:
Wonderous Item, very rare, requires attunement
A circular silver pendant, with the words “Fear the Deep, Fear the Darkness” written on it in Deep Speech. A creature who does not know Deep Speech may translate the inscription with a successful DC17 Intelligence check.
While attuned to this item, the wearer is proficient in Deep Speech, and may cast the spells Cause Fear, Fear, Darkness, and Watery Sphere spells at will.
Petrified Amygdala:
Wonderous Item, rare, requires attunement
A small stone vaguely similar in shape to an almond. Said to be taken from the brains of petrified corpses, this item acts as a buffer against preternatural fear.
When attuned to this item, the wearer is immune to spells or effects that would frighten it.
Essence of Faatus:
Wonderous Item, very rare, requires attunement
A capsule containing the ever-polymorphic essence of the Outer God Faatus. When attuned to this item, the wearer may cast the spell creation at-will. However, whenever this item is used in this way, the caster must roll on the Wild Magic Surge at the beginning of every turn for one minute.
Sanguine Surgical Gloves:
Wonderous Item, very rare, requires attunement
A pair of formerly pristine gloves used by the doctors and surgeons of the Church of Astral Knowledge, forever stained by the blood of countless patients.
While attuned to this item, a creature may use a bonus action to “observe” a creature, requiring the target to make a DC 17 Wisdom save. If the creature fails, the attuned user may then add an additional 6d6 damage of the appropriate damage tag to their next physical attack against the targeted creature.
Additionally, an attuned creature may use an action to cast life transference at 3rd level a number of times equal to their Wisdom modifier. The attuned creature may do so again after a long rest.
These items were heavily inspired by the stories of H.P. Lovecraft, as well as my own currently renewed interest in the lore and gameplay of Bloodborne. This is only the first of (hopefully) many items relating to my primordial abominations, so hopefully these add an eerie element to your games!
As always, feel free to critique and respond.