Tough Hide

[Transmutation]
Level: [Nature 1]
Components: [S], [V], and [M]
Casting Time: 1 Standard Action
Range: Touch
Effect: Creature Touched
Duration: 1 hour per CL @{cl} hours
Saving Throw: Fortitude; Harmless
Spell Resistance: Yes

Increase the natural armor enhancement bonus of a character by +1 and +1 per 4 HD. This stacks with a base natural armor, but not other natural armor enhancement bonuses.

VTT Macro Description:
@{character_name} casts a spell that magically harden's the target's skin. The target will gain +[[1+floor(@{hd}/4)]] natural armor enhancement bonus to AC.