[N.H.Alicia]

Here's a magic-style mock-up:

Fireball Jutsu (IQ/H)
This technique is primarily used by the Uchiha clan. The user either breathes out a fireball or a stream of fire ending in a large sphere dealing 1d6 burning. The area of effect begins at two yards. Roll against Innate Attack to hit.

Cost: 2 Chakra plus 2 for each extra die of damage and yard of radius up to 4d6 and 5 yards.
Seals: Six.
Prerequisites: Ninjutsu 12/2 (skill based/advantage based)
These numbers aren't final.