Planar Wild Shape (Feat)
You can infuse your wild shape with planar strength.
Prerequisites: Level 16, Wild Shape class feature, Knowledge (Planes) 5 ranks
Benefit: When you use Wild Shape I (Druid Spell) or any higher level version of that spell to take the form of an animal, you can expend an additional spell slot to add the Celestial Creature or Fiendish Creature pattern to your animal form.
Note: Good druids must use the celestial pattern, while evil druids must use the fiendish pattern. Neutral Druids must choose one at the time they pick this feat and use it. This choice may not be changed except by use of the Reselection Downtime rules Between Adventures.
Special: If your form has the celestial template and you score a critical threat against an evil creature while using your form's natural weapons, you gain a +2 bonus on the attack roll to confirm the critical hit. The same bonus applies if your form has the fiendish template and you score a critical threat against a good creature.