I agree with those saying Reigns should adopt the powerbomb as a finisher. In fact, since Reigns is a powerhouse type of wrestler and Goldberg is the supreme archetype of a powerhouse wrestler, Reigns should pattern the set-up for his finishing maneuver the same way Goldberg did - hitting them with one hard-hitting signature move first (the Spear in both men's case) and then finish them off with another signature maneuver next. For Goldberg, that was the Jackhammer. For Reigns, it could be the powerbomb.