Bigby's clenched fist

Caster Level: Wizard / Sorcerer 8

Innate Level: 8

School: Evocation

Component(s): V, S

Range: Long

Save: Fortitude

Spell Resistance: Yes

Area of Effect/Target: Single

Duration: 1 Round / Level

Description: A giant hand appears and attacks the target, once each round for the duration of the spell. Each hit causes 1d8+11 points of damage to the target and if they fail their Saving throw they are stunned for that round as well.

BoW Changes
Bigby's Clenched Fist: Based on Discipline check. DC = Caster Level + Spell Level - 15 + Caster Ability Modifier + Spell Focus Bonus + Size Modifier (vs. Large Size) + d20. Arcane Defense lowers the DC by 2. The damage from Clenched Fist is 2.5x to compensate for the reduced duration.