Bomberman (Updated)

This spell is terrifying, not only because of its destructive power, but also because of the fact that even the most incompetent of magic users can cast it with ease. This spell can be targeted at any area the caster can see. At a basic level, it creates an explosion with a 30ft radius. Any terrain caught in the blast is reduced to rubble and counts as difficult terrain indefinitely. At every level beyond 1st, this explosion increases by 30ft. Any creature, including the caster, that is caught in the explosion will take damage. At every level beyond first, anything caught in the blast takes an additional 5d20 Force damage and 5d8 Fire damage for each level, except at 9th, which is different. In simple terms:

1st Level: 30ft radius, 5d20 Force, 5d8 Fire

2nd Level: 60ft radius, 10d20 Force, 10d8 Fire

3rd Level: 90ft radius, 15d20 Force, 15d8 Fire

4th Level: 120ft radius, 20d20 Force, 20d8 Fire

5th Level: 150ft radius, 25d20 Force, 25d8 Fire

6th Level: 180ft radius, 30d20 Force, 30d8 Fire

7th Level: 210ft radius, 35d20 Force, 35d8 Fire

8th Level: 240ft radius, 40d20 Force, 40d8 Fire

9th Level: 500ft radius, 100d20 Force, 100d8 Fire