Mumm-Ra finds the Treasure of Thundera called the Totem of Dera, which has the power to heal and bring inanimate objects to life, and gives it to Vultureman that he might turn it into a device of destruction to use against the Thundercats.
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We'll never find the Thundercats in this fog.
Hm, yeah, and what're we gonna do when we find them?
[in his face
Do? What are we going to do when we find the Thundercats? This!
[aims the Totem into the water of the Baleful Swamp to form a living-tentacled octopus from its water