The animation of Hordak destroying a statue titled 'Obey' in his throne room is mostly reused from Into Etheria (1985). The only difference is that this time flames shoot out from his canon instead of a laser beam, see also goofs.
The sequence of He-Man and She-Ra working together to lift and throw a large object would be seen again in Day of the Flowers (1986) and Sweet Bee's Home (1986).
When Prince Adam is pulled to the Fight Zone through the dimensional gateway, the background shows the Crossroads of All Universes from Quest for He-man (1983). This effect will be seen again in The Greatest Magic (1985).