|Spell level :||Innate level: 3, Druid: 3, Ranger: 2|
|Components :||Verbal and Somatic|
|Target/Area :||One natural slashing or piercing weapon of target creature|
|Duration :||10 minutes / level|
This spell doubles the critical threat range of one natural weapon that deals either slashing or piercing damage. Multiple effects that increase a weapon's threat range do not stack. This spell is typically cast on animal companions.
This spell currently does nothing since the Keen itemproperty doesn't work with Natural weapons. A possible solution would be adding the Improved Critical(Unarmed Strikes) feat permanently or as a temporary itemproperty and adding it to the "Skin Item" of the creature.
Improved Critical(Creature) currently doesn't work(probably with anything) while Improved Critical(Unarmed Strikes) works even with Natural Weapons.