6th-level Spell: Stirge Swarm

Whispering (Conjuration)

You conjure a swirling swarm of supernatural Striges that swirl around within a 20-foot radius of the target point. Creatures with blood other than the caster that start their turn within the area or enter it for the first time during a turn must make a Dexterity saving throw. On a failure, they are drained of their blood by the swirling storm of Striges, reducing their hit points by 4d4 + 12 damage and restoring 4 hit points to the caster. On a successful save, they half as much damage and restore 2 hit points to caster.
As a bonus action on each of their turns for the duration of the spell, the caster can move the swirling swarm of Striges up to 30 feet in any direction.
Source: KCC

• Casting Time: 1 action
• Range: 60 feet
• Components: S, M (a splash of your blood worth at least 10 hit points, which the spell consumes)
• Duration: Concentration, up to 1 minute
• Ritual: No