Ring of the Unlocked Self

"With this ring, I grant thee power/Call thy gods in their darkest hour”

A thorned signet ring made of oak wood with crude, indecipherable runes (not unintelligible, as you can understand them to mean the above phrase) etched into the face. When used, the script glows with the energy of the selected spell as you use it as an arcane focus. Can cast “Unlock Self” once per long rest.

If taking psychic damage equal to or greater than 1/2 your current HP, you may look down and find that your ring appears to be made of hastily formed papier-mâché. This effect ends either at the end of the spell's duration or when you take your eyes off the ring.

Unlock Self

“Call Thy Gods"
5th Level Divination Spell
A flash of magical foresight seizes you, granting you forbidden power…at a cost. Taking a bonus action, you gain a spell slot that can be used to cast any spell, regardless of class. Spell level must be equal to or less than the highest level you could cast a spell in a spellcasting class, given your equivalent level (i.e, a 9th level Rogue may cast up to a 5th level spell, etc). Spells cast using this slot can use any ability as the spellcasting ability, including Strength and Constitution.
Before using extra slot, consult the following table for psychic damage:

When checking for psychic damage, depending on your familiarity with the spell, roll with the following conditions. With your DM's permission, you can choose to level up the disadvantage on your psychic damage to bypass material component requirements:
Known/Prepared Spell: Advantage. IF BYPASSING: No condition.
Unprepared/Unknown Spell in Class: No condition. IF BYPASSING: Disadvantage.
Note: If casting as a Cleric or Druid, this counts as any spell that you have never casted before.
Note: Magic initiate allows you to roll with this condition for spells in your given Initiate class.
Unknown Spell Not in Class: Disadvantage. IF BYPASSING: Double disadvantage.

If psychic damage reduces your total HP to 0 or less, you are unable to cast the chosen spell.

Notes: Buff, Focus, divination