Soul Nuke is the evolved form of the Spirit Bomb, only used by Goku once to destroy Broly LSSJ5. This move is so powerful it could destroy a entire galaxy upon impact. Goku never used this agian since he actually did destroy the galaxy and used the dragon balls fused into him bring everyone back. Vegeta tried to copy this move into his own move. He changed his Final Flash into Last Flare. The beam's colour was changed to green. it was as powerful as the Soul Nuke but he had controlled it so it would not destroy the galaxy. When Goku and Vegeta fuse into Vegito it is called The Last Nuke.