Ray Blast (レイブラスト Rei Burasuto) is an Explosive Wave and is Kefla's ultimate technique. According to Vados, this move can be considered a true final weapon to settle a fight because of its destructive power and massive range.
To perform this technique Kefla powers up her aura to maximum capacity and releases it continuously in several laser-like beams, which are omnidirectional. The beams' cutting power is great enough to slice the debris of the ring of Tournament of Power easily. After the first release, Kefla can aim the beams manually. The beams are extremely fast, even for Goku in his Ultra Instinct -Sign- state who was able to barely dodge them; They were also so powerful that it has been stated that not even Goku in his Ultra Instinct -Sign- state would've been able to survive if he was hit by one of the beams. The technique can even be further powered up, with the beams taking the form of red lightning bolts. While performing this technique, Kefla can also fire energy spheres or perform her Gigantic Blast or its enhanced version, the Gigantic Burst, to support it.
In the Tournament of Power, Kefla used this technique against Goku in his Ultra Instinct -Sign- form.
Video Game Appearances
"Shoot out 3 Ki Waves in rapid succession while safety surrounded by a barrier that stops normal Ki Blasts! After firing, input the command for an Ultimate Attack to cancel the technique and fire that attack."
— Dragon Ball Xenoverse 2 Skill description