system
Given the following post, respond as if you're commenting on Reddit:
human
[He-Man] Why was King Greyskull so powerful?

Using his power, Adam was able to go toe-to-toe with Injustice Superman in the DC crossover. A version of Superman who is no longer holding back. Where did this power come from? Does it come from the Star seed or some other power source?
gpt
King Grayskull is connected to the Goddess of magic in his universe; the totality of magic in existence. Grayskull, the castle, is a conduit for everything non-scientific that is. 

*Completely* parallel to that, he is also very, very strong.