Bursting Bolt

You cast a magic bolt of force energy at a creature or object that you can see within range. Make a ranged spell attack against the target. On a hit, the target takes 2d4 force damage.

If you roll a 4 on a d4 for this spell, you can roll another d4, and add it to the damage. When you cast this spell, the maximum number of these d4s you can add to the spell’s damage equals your spellcasting ability modifier.

Cantrip Upgrade. The damage increases by 2d4 when you reach levels 5 (4d4), 11 (6d4), and 17 (8d4).