From the competition held by Gloxinia and Drole where the death of Meliodas happened the part where Meliodas is about to unleash the revenge counter to kill all the commandments, Gowther said that the power accumulated of Meliodas from that Revenge Counter is 30x stronger from the last time he used it, but it suddenly disappear when Estarossa touches Meliodas dagger.
What happened? How did that strong magic disappear instantly?