Combined attacks: undeservedly forgotten

[Cheb]

The Senshi often use the combined attacks against a more resilient enemy.
They do it with a flair.

...then why the hell I've NEVER saw it in fanfics?!

The first I remember them using (at least twice) is Moon Tiara Action + Fire Soul, resulting in a fiery-red discus.
The most impressive was the triple orb of destruction made of merged Deep Submerge, World Shaking and Dead Scream (all just to squash the lil' Hotaru). Long story short, it missed.

The "Another Story" RPG even has a special system of linked attacks.

http://217.70.20.10/_share/_002/sm011clip_00.avi
http://217.70.20.10/_share/_002/sm119clip_00.avi
http://217.70.20.10/_share/_002/sm125clip_00.avi

[Makoto]

I've used it at least once... in A Call to Action, if I remember correctly. I think it was Terra and Uranus inadvertently/accidentally combining an attack. Can't remember if I used it anywhere else.