Homebrew:Swarm of sprites
Swarm of Sprites can be conjured by Conjunction of Fey, homebrew content from Tasha's Crucible of Everything Else volume 1.

Medium swarm of Tiny Fey, neutral good
Armor Class 15 (leather armor)
Hit Points 36 (8d8)
Speed 10 ft., fly 40 ft.
Roll initiative! +4
STR
DEX
CON
INT
WIS
CHA
10 (+0)
18 (+4)
10 (+0)
14 (+2)
15 (+2)
10 (+0)
Damage Resistances bludgeoning, piercing, slashing
Condition Immunities charmed, frightened, grappled, paralyzed, petrified, prone, restrained, stunned
Skills Perception +4, Stealth +8
Senses Darkvision 60 ft., Passive Perception 14
Languages Common, Elvish, Sylvan
Swarm Heart Sight. The swarm automatically knows the current emotional state of any creature it touches. If a target fails a DC 10 Charisma saving throw, the sprite also knows the creature’s alignment. Celestials, fiends, and undead automatically fail the saving throw.
Swarm. The swarm can occupy another creature’s space and vice versa, and the swarm can move through any opening large enough for a Tiny sprite. The swarm can’t regain hit points or gain temporary hit points.Multiattack. The swarm makes three weapon attacks.
Vanguard. Melee Weapon Attack: +6 to hit, reach 0 ft., one target. Hit: 2d4 slashing damage plus 2d4 slashing damage if the swarm is above half hit points.
Volley. Ranged Weapon Attack: +6 to hit, range 40/160 ft., one target. Hit: 2d4 piercing damage plus 2d4 piercing damage if the swarm is above half hit points. On a hit, the target creature must succeed on a DC 15 Constitution saving throw or become poisoned for 1 minute. If it fails its saving throw by 5 or more, the poisoned creature falls unonscious for the same duration, or until it takes damage or another creature takes an action to shake it awake.
Lift. The swarm attempts to grab a creature or object within its space. The target must succeed on a DC 15 Dexterity saving throw, or else be grappled and restrained by the swarm. This does not make the swarm grappled. The swarm can magically lift any Medium creature or object that weighs 500 pounds or less.
Plummet. The swarm drops any number of creatures it is holding. It takes coordination for dozens of creatures to drop something simultaneously; the swarm cannot willingly drop a creature or object except by taking this action.