ThunderCats (1985)

S2E21 Mumm-Rana's Belt

After catching Snarf share a tale about Mumm-Rana’s enchanted belt and her grandmother Queen Luna, Luna and Amuk set off to the white pyramid to claim the belt, inadvertently wrecking the pyramid in the process. Pumyra attempts to intervene but ends up trapped inside. Feeling sidelined when Luna no longer relies on him, Amuk's jealousy leads to him accidentally releasing Pumyra. Luna then coerces Slithe and Monkian into helping her launch a surprise attack on Lion-O and Panthro. During the confrontation, Lion-O uses his sword to revive Mumm-Rana, who retrieves her belt and defeats Luna. Ultimately, Amuk arrives and destroys the belt.