Flamma is a fire-demon horse. Fire sprouts from it's mane, tail, and eyes.
Flamma is a demon horse in Hylain myths. It is said that she was the guardian of all horses and was neither good nor evil. She would kill those who abuse horses. Some call the mare a deity.
Ciphra Spes casts a spell on Servine to make Flamma real in her mind, because the mare closely resembles the Pokemon, Rapidash, Servine's worst fear.