Dragon Smash is a technique used by Goku in his Super Saiyan God form.
Goku charges his Ki, then flies over to the opponent and lands a powerful punch which knocks them to the ground. He proceeds to hit them with a powerful kick from his right leg that sends the opponent flying.
Appearances in Video Games
Dragon Smash was named in Battle of Z, where it appears as one of Super Saiyan God Goku's Special Attacks. However, Dragon Smash is also the name of a physical technique used in the Budokai Tenkaichi series. It appears as one of Super Saiyan God's Goku's Super Attacks in Dragon Ball Z: Dokkan Battle, but the final punch creates a dragon-like aura.