Those mages guessed exactly right; that silver giant cannon was indeed a Magic Cannon!
When a magic civilization reached the pinnacle of level two, pure magic could no longer satisfy its development needs. Subsequently, the magic civilization began to merge with mechanical and alchemy civilizations, giving rise to magic science.
This Magic Cannon was a derivative of such magic science, and only a level three or higher magic civilization could produce one!
The Magic Cannon was a type of magic weapon activated by magic ore, with its power varying based on the quality of the magic ore. The weakest was equivalent to the attack of a Source Energy User, but when using the highest quality magic ore, an ordinary Magic Cannon could even unleash the attack of a Divine Ability User.
