Fireball

Ranged spell
Daily
Special: 

When you cast this spell, you can choose to cast it recklessly.

Target: 
1d3 nearby enemies in a group. If you cast recklessly, you can target 1d3 additional enemies, but then your allies engaged with the target may also take damage (see below).
Attack: 
Intelligence + Level vs. PD
Hit: 
10d10 fire damage.
Miss: 
Half damage. (Reckless Miss: Your allies engaged with the target take one-fourth damage.)
7th Level Spell: 
12d10 damage
9th Level Spell: 
20d10 damage
Champion Feat: 

Casting the spell recklessly increases the number of additional targets to 1d4 instead of 1d3.

Epic Feat: 

Increase the number of targets to 1d3 + 1 instead of 1d3.