Necklace of Fireballs

Wondrous item
This necklace has 1d6 + 3 beads hanging from it. You can use an action to detach a bead and throw it up to 60 feet away. When it reaches the end of its trajectory, the bead detonates as a 3rd-level Fireball spell (save DC 15).
You can hurl multiple beads, or even the whole necklace, as one action. When you do so, increase the level of the fireball by 1 for each bead beyond the first.
Foundry Note
The 9 charges represent the maximum number of beads possible to find; please adjust as required. The Other Formula button can be used to roll the additional damage for extra beads thrown.
Additionally, here is a price guide depending on the number of beads still remaining. These prices are a guide only and should be adjusted accordingly to reflect the Dungeon Master's world:
| | Number of Beads | Price (gp)
| 8 | 30,720
| 7 | 15,360
| 6 | 7680
| 5 | 3840
| 4 | 1600
| 3 | 960
| 2 | 480
| 1 | 300