I adapted these from the Tall Tales book using the guidelines in the Players Handbook for custom backgrounds.
Agent of the Dreamlands
Second Sight: See through Invisibility to Mortals. Advantage on perception tests vs invisibility, polymorph, shapeshifting, and divination.
Skills: Perception, Performance
Langauge: Elven or Draconic
Choose any one Tool proficiency
Fey Trickster (Requires Fey subtype, eg Elf, Half Elf, Gnome, Pixie, Sprite, Imp, Brownie, Etc)
Confuse Magic: Chance to use forbidden items and trigger or alter existing magic in random ways.
Success: 1-10 (item or magic works as intended), Failure 11-89 (item or magic does nothing different than it currently is doing), Backfire 90-96 (item or magic misfunctions directing its results against an unintended target, typically the worst possible, for example a wand of fireballs might noly blow up itself and the user a shield spell might protect the caster’s enemy or a nearby tree, Unexpected Result 97-100 (DM Discretion, rough guideline, 1 or 2 helpful, 3 or 4 harmful, 5 or 6 amusing but indifferent); % chance gets slightly more favorable at higher levels.
Skills: Persuasion, Deception
Choose any two tool proficiencies