Dragon Flame Power Fire

The Dragon Fire is a magic that is is considered to be the creating force of the universe and belongs to the Great Dragon. Bloom discovers she is the guardian of the Dragon Fire in season one, somewhat like a physical vessel for it.

It is the supreme power in the Winx Club universe, and cannot be defeated except by the Water Stars, which, incidentally, only a possessor of the Dragon Fire can use. There are two kinds of the Dragon Fire know in the series: a purer fire that Bloom possesses and a darker fire that belongs to Baltor.

Daphne gave the power to Bloom when Sparx was destroyed to protect her. All the known villains (besides the Black Circle) have wanted it for their own at some point in the show, even Baltor. Of all the villains to actually obtain it, only Icy, Darcy, and Stormy were successful. The Trix stole the fire from Bloom in season one, and she had to summon The Great Dragon to fight them for it. At the very end of season three, Bloom used her power to snuff out Baltor's piece of the fire.

Abilities
The Dragon Fire is primarily a beneficial magic giving Bloom the ability to break very powerful spells and heal people. In the RAI version of Reaching for the Sky, she is even able to bring back Sky from the dead. In the 4kids version, Sky was just under a deep sleep but Bloom still brought him back.

Her healing powers develop in season four when Bloom develops the spell Force of Life. She healed extremely weak people (like those who had fainted from exhaustion) like Mr. Batson, Mike in the fire, and Roxy after she was possessed by Nebula.

The Dragon Fire manifests itself in the form of dragons or balls of fire.

Effects

 * Healing: The Dragon Fire can heal the wounded and bring the dead back to life, but strangely she did not use it to bring Nabu back to life while she was in her Believix form. So it might be possible that she loses the power once she is in her Believix form, although that is unlikely.
 * Activating the Water Stars: Only a possessor of the Power the Water Stars defeat can activate these; this can be extremely dangerous, as mentioned when Bloom said she would need the Stars to defeat Baltor.
 * Senses: Bloom can pick up on others emotions and intentions. It is unknown if this is the power itself or Bloom who causes this.

Bloom's regular attacks as well are based on the fire, i.e. Fire Arrow, Dragon Fury, etc.