Delayed Blast Fireball

7th-Level Evocation Spell

Source: Player's Handbook

Spell Lists: Sorcerer Spells, Wizard Spells

Casting Time: 1 action

Range: 150 feet

Components: V, S, M (a tiny ball of bat guano and sulfur)

Duration: Concentration, up to 1 minute

A beam of yellow light flashes from your pointing finger, then condenses 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 on a failed save, or 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.

At Higher Levels

When you cast this spell using a spell slot of 8th level or higher, the base damage increases by 1d6 for each slot level above 7th.