The Eidolon's rank determines its stats when summoned to battle. The rank is the sum of the character's Crystarium level and the number of level 5 roles. Thus the maximum rank is 16 (Crystarium level 10 + all roles at level 5).
A cracked tongue may indicate an oral yeast infection, or oral thrush. Oral thrush is caused by the accumulation of the candida fungus in the lining of your mouth. In addition to cracks, symptoms of oral thrush include pain, loss of taste and lesions on the tongue and other areas in the mouth. A weak immune system, diabetes, cancer and vaginal yeast infections are all causes of oral thrush, according to MayoClinic.com.
Trauma to the lips, tongue and the inside of the mouth is quite common. The soft flesh of the lips and their exposed location make them vulnerable to injury. A blow to the face can crush your lips against your teeth, causing bruising or cuts. Your teeth can cut the inside of your lip or puncture your skin. A fall or blow may cause you to bite your tongue. Any cut inside the mouth usually bleeds heavily because of the rich supply of blood to the area.