The material below is Open Game Content from a 3PP Source

IRONBEARD

School transmutation; Level antipaladin 1, cleric 1, magus 1, paladin 1, ranger 1
Casting Time 1 standard action
Components V, S
Range touch
Target creature touched
Duration 1 minute/level
Save Fortitude negates (harmless); Spell Resistance yes (harmless)

This spell causes a brushy beard of stiff iron to erupt from the face of a willing target. The ironbeard grants a +1 armor bonus to AC, and this bonus stacks with any armor worn by the creature. The ironbeard may also be used as a weapon equivalent to cold iron armor spikes. The ironbeard makes it difficult to speak, so any spellcasting with a verbal component has a 20% spell failure chance.