Multiattack. The spirit makes a number of Fey Blade attacks equal to half this spell's level (round down).
Fey Blade. Melee Attack Roll: Bonus equals your spell attack modifier, reach 5 ft. Hit: 2d6 + 3 + the spell's level Force damage.
Fey Step. The spirit magically teleports up to 30 feet to an unoccupied space it can see. Then one of the following effects occurs, based on the spirit's chosen mood:
Fuming. The spirit has Advantage on the next attack roll it makes before the end of this turn.
Mirthful. Wisdom Saving Throw: DC equals your spell save DC, one creature the spirit can see within 10 feet of itself. Failure: The target is Charmed by you and the spirit for 1 minute or until the target takes any damage.
Tricksy. The spirit fills a 10-foot Cube within 5 feet of it with magical Darkness, which lasts until the end of its next turn.