Delayed Blast Fireball

Duration: 1 minute, Concentration
A small of bead of flames appears within range.
When the spell ends, the bead explodes. Each
creature in a 20 ft radius sphere makes a Dex
save. The spell deals 12d6 + 1d6 fire damage, for
each turn you cast the spell, on a failure, or half
as much on a success. A creature that touches the
bead makes a Dex save. The bead detonates on a
failure. On a success, the creature can throw the
bead 40 ft away. At Higher Levels. Each extra
spell slot incre