Beneath the Borderlands
Delayed Blast Fireball
Range: 240 ft
Duration: Chosen by caster (up to 10 minutes)
This spell creates a normal fireball, but the blast can be delayed for a period of up to 10 minutes. The burst radius, per a normal fireball, is 20 ft, and damage is 1d6 per level of the caster. The blast shapes itself to the available volume (33,000 cubic feet), filling 33 ten-by-ten-by-ten cubical areas.