The air buzzed with the three bolts that kept pace with Marklan, our crossbowman, when the spearmen leapt out. He shot one and the hovering bolts launched themselves onto the attack and took down two more.
“The buzzing of those damn things gives me a headache,” said Noric the Mage, “but they pay for themselves every time we are attacked.”
“Agreed.”
Hovering Hornet Bolts
These bolts are painted in patterns of yellow and black and wrapped with strips of fine cloth.
Sea of Stars RPG Design Journal 