Delayed Blast Fireball

Delayed Blast Fireball

7th-rank - Wizard Spell: Evocation

Casting Time: 1 action

Range: 150 feet

Duration: Concentration, up to 1 minute

Components: V, S, M

Materials: a tiny ball of bat guano and sulfur

Auditory Sensory Effects: Loud

Visual Sensory Effects: Gargantuan

Olfactory Sensory Effects: Strong

Casting Perception Mod +4

Effect Perception Mod +12

Bright yellow aura gathers in your hand and streaks from your pointing finger, condensing to linger at a chosen point within range as a glowing bead for the duration. When the spell ends, either because your concentration is broken or because you decide to end it, the bead blossoms with a low roar into an explosion of flame that spreads around corners.
Each creature in a 20-foot-radius sphere centered on that point must make a Dexterity Saving Throw. A creature takes Fire Damage equal to the total accumulated damage and is Ignited on a failed save, or takes half as much damage on a successful one.
The spell's base damage is 12d6 . If at the end of your turn the bead has not yet detonated, the damage increases by 1d6 .
If the glowing bead is touched before the interval has expired, the creature touching it must make a Dexterity saving throw. On a failed save, the spell ends immediately, causing the bead to erupt in flame. On a successful save, the creature can throw the bead up to 40 feet. When it strikes a creature or a solid object, the spell ends, and the bead explodes.
The fire damages objects in the area and ignites flammable objects that aren't being worn or carried.

At higher ranks: When you cast this spell as a spell of 8th rank or higher, the base damage increases by 1d6 for each rank above 7th.