User blog comment:Thewaterdragonslayer/Personal Reflections on the Differences Between 1st Generation Dragon Slayers and the Other Generations/@comment-213.88.211.50-20130208094433

i suspect he third generation can enter dragon force because of the lacrima i their body. still just a theory the second can enter a dragon force but only to use their dragon slayer magic. the first can only enter dragon force if they consume something that has a great amount of magic in them. but i think only they can eat others element to fuse with their own. just theories.