Makaio-ken

Makaio-ken is fighting technique invented by the Demon Realm Kai as the Demon version of Kaio-Ken. Shroom is the only person to have ever mastered the technique, and use it effectively with his Demon God form.

Power and Usage
Unlike Kaio-ken; Makaio-ken can be used slightly longer and multiplies the user's abilities by x2.5. Shroom has managed to train himself to use Makaio-ken x30 despite the heavy toll it does to his body, and puts him at a level above the anime's X20 Super Saiyan Blue Kaio-ken.

Appearance
Makaio-ken coats the user in a green aura, raising the user's hair, and increase their muscle mass ever-so-slightly. The higher the multiplier; the more pronounce their aura becomes, and the more sharper hair looks.

History
Shroom first used this against Super Saiyan 3 Vegeta in order to create some distance, but only managed to crack his armour.