Hello Again Kiddos. Tis me, Senior Mister Virtus. and today. I got something a bit out of the Ordinary on my terms for you all. I was rewatching Dragon ball Super. whats in it so far at least. and Something that I know has been suggested before. but I believe I could further explain, is the “Energy Blade” attack. Used by Zamasu, and Black Goku. and a Few Frieza Minions. If you are not already familiar with the attack, the User focuses their Ki in their palm and then moves it to their Finger tips and their wrist. Depending on the strength of the user, the Energy blade can be pointing just off of the hand. Or it can be longer than the person is tall. Its damage is usually dependant of the strength of the user, But it is very effective against someone without it. It is known to have cut off limbs, make holes in time & Reality. and cut off tails.
Now. How I believe it will work. is that you can get it from King Kai, or a Supreme Kai. You can turn it on and off like Kaioken in the menu as seen here:

And you can have it at a few different angles, the Blocking angle:

And It would have a Attacking Stance. 
Now. The Color of them can depend on your alignment, how often you use it or how powerful you are. Or you can change it from shenron.
Thanks for reading guys. Sorry for the terrible art/editing. Comment down below what you think and if I missed anything!