Beckon the Bloodhaze

You carefully sprinkle a mix of sugar, alcohol, and vampire blood on top of a corpse within range. After an hour of incubation, a Bloodhaze Swarm under your control emerges from the corpse. In combat, the swarm shares your initiative count, but it makes its turn immediately after yours. It obeys your verbal commands (no action required by you). If you don't issue any commands, it takes the dodge action and uses its move to avoid danger. The swarm is under your control for 24 hours, after which it stop following any commands you've given it. To maintain control of the swarm for another 24 hours, you must cast this spell on the swarm again before the the current 24-hour period ends.  The use of the spell reasserts your control over up to four Bloodhaze swarms you have created with this spell. , rather than creating a new one.

At Higher Levels: When you cast this spell using a spell slot of 5th level or higher, you create or reassert control over two additional Bloodhaze Swarms for each slot above 4th. Each of the Swarms must come from a different corpse.