Sling Bullets of Althemone

From Mythic Odysseys of Theros, page 196.

Description
Weapon (sling bullet), very rare.

The sling bullets come in a pouch, which contains 1d4 + 4 bullets. Roll on the Magic Sling Bullets table for each bullet to determine its magical property.

You have a +2 bonus to attack and damage rolls made with each of these bullets. If a bullet misses its target, the bullet teleports back into the pouch. Once a bullet hits a target, the bullet loses its magic.