The Universal Spirit Bomb is an overwhelming Spirit Bomb that Goku used on Omega Shenron. It draws its power from energy sources across the whole universe. The Universal Spirit Bomb is the largest and strongest out of all the other Spirit Bombs in the anime, but it is quite the smallest version in Dragon Ball Z: Budokai Tenkaichi 3, yet thoroughly unblockable. Few other techniques can rival its vast destructive power, and it is arguably the single most powerful attack in the series, since it was the only attack successful in completely obliterating Omega Shenron.