Strength of Life is Bloom's Believix power which she can use to make people believe in magic or overcome their weaknesses. She can also use this to heal somebody due to the Dragon's Flame's healing power.
Times When Used
- Season 4 Episode 8 - Used to heal and make Mr. Baston to believe in fairies and magic.
- Season 4 Episode 9 - Used to heal Roxy.
- Season 4 Episode 11 - Used along with Gem of Mind to make the bank robbers believe in magic.
- Season 4 Episode 13 - Used to calm all the people present at the station and make them believe in magic.
- Season 4 Episode 15 - Used in a Believix Convergence with Musa and Aisha to stop Mitzi, Darma, and Sally and make people realize that Bloom and the other Winx are the good fairies.