hm i may be wrong but when you cancel his fireball after the 1,2,3 knockdown string you can land 2,1 and 1,2, 1,1 etc strings.. but i only got it one time so.. is it legit and does it lead to some good damage ?
Personally in hellfire I have no reason to use this string. The third hit has shitty range, and the full string generally doesn't offer anything over 114.
Also, the combos are super inconsistent, and that's not even considering the input difficulty. I would not invest in this string for hellfire.
But anyway, I found some neat combo ideas, I hope they haven't already been posted.
EX db3, run b12, db4, f4 bf1, fjp, 21 db3. 26%
In this combo, flame aura hits so late in it's active window that you can link with f4, which is fucking 25 frames. Not that damaging but I thought it was an interesting concept. Here's the most damage I could get without spending further meter after EX tp.
Ex db3, run b12, db4, run 214 db3, 21 bf1, fjp, 21 FBC 21 bf4. 33%
This also gave me ideas for the aerial teleport, and I learned you can straight up link air EX to with flame aura. This is cool because the launch height on ex teleport does not decrease in longer combos, and that means this is a consistent restand tool that's not a spear. For example:
214 db3, fjk EX db3, db4, f3 bf1, fjp, 21 FBC 4 db3. 38%
At the moment it doesn't seem like it beefs up the combos any, but it opens up more options. Perhaps Hellfire's combos are even more versatile than Inferno's.