This card is utterly pointless. By the time it was printed, adding 50 points to a digimon power for having an ability was nothing special. None of the cards that give fire to a digimon need it.
This card will pretty much never be used in any deck. I've also banned Giga Claws and Fire Crystal for my playgroup because of how over-powered those two options are, and how nothing really benefits from getting 'fire'.
It might have been nice to see this card GIVE fire for a duel, with giga claws and fire crystal depending on it to be used. They probably still would have to have been toned down though, and some digimon should at least have been printed with it as a built-in ability.
I give this card a 0/10.