You touch up to three stones or pebbles used in casting this spell and imbue them with magic.

You or someone else can make a ranged spell attack with one of the pebbles by throwing it or hurling it with a sling:

• Thrown Pebble. If thrown, the pebble has a range of 30 feet counts as a simple weapon that the attacker has proficiency with.

• Sling Attack. The sling attack gains the benefit of this spell when used to hurl one of these pebbles.

The pebble uses your spellcasting ability modifier instead of the attacker's Dexterity modifier on attack and damage rolls. On a hit, an attack with the pebble deals 1d6 bludgeoning damage or 1d10 if the target of the attack is dragon, giant, or undead. Hit or miss, the spell then ends on that stone or pebble.

If you cast this spell again, the spell ends early on any stones or pebbles currently affected by it.