Inaccurate?

Gelid Blood

(Frostburn)

Necromancy [Cold]
Level: Sorcerer 5, Wizard 5,
Components: V, S, M,
Casting Time: 1 standard action
Range: Close (25 ft. + 5 ft./2 levels)
Target: One creature
Duration: 1 round/level
Saving Throw: Fortitude partial
Spell Resistance: Yes

Cold energy surges through the target's body, congealing the blood in the creature's extremities.
This effect causes a 4 penalty on attacks, Armor Class, and all Strength and Dexterity-related checks, and anyone casting a spell with a somatic component has a 50% chance of spell failure for the duration of the spell.
If the target makes its Fortitude save, the creature only takes a -2 penalty on attacks, Armor Class, and all Strength-and Dexterity-related checks and has only a 25% chance of spell failure for spells with a somatic component.
Material Component: A pinch of flour.