A made up jutsu? Ehhh, Mine would be simple:

Suppai Butoukai (Acidic Ball)
Rank: B-Ninjutsu
Users: Heru Pembala
Having learned to control the water element as well as having advanced training in the lightning element, the composition of the two creates a small condensed orb of Acidic, Low PH level, water creating a very deadly liquid. This liquid can melt through most defenses that are not a defense based on water. This Acid can cause major erosion to defenses, skin, bodily tissue, and muscle. Very deadly is not fixed quickly.

Yes I roleplay on Naruto Roleplay forums and have created, literally hundreds of jutsus...

It happens when your the Raikage...