Several children took stones and said, please give me strength. What animation is it?

Several children took stones and said, please give me strength. It's the comic book Man and the Master of the Universe. Man and the Master of the Universe is an American cartoon, which was made in 1983. The story takes place in Etania, a fantasy world similar to Middle-earth, where there are magical creatures such as flying horses and wizards. Adam is the prince of this world. He has a secret, that is, every time his stone calls out a spell, it gives me strength. I am a sailor. Later, he will become a huge sailor, fighting the cruel King of Skull.