Testing with Curse Plutonium Dragon wasn't a random idea he had on the spur of the moment.
In theory, the slimes, which inherited some of the Giant Dragon's reproductive cell traits, should have no problem reproducing in the body of a real giant dragon.
However, due to the significant disparity in rank, Anvis was unsure whether these creatures could actually obtain the life information of the Curse Plutonium Dragon.
Upon entering the high-risk experimental area of the laboratory and after the heavy alloy gates had closed, Anvis activated the laboratory's comprehensive defensive array and then released three Curse Plutonium Dragons.
As they gradually grew larger, after Anvis had obtained Emperor Fidels's treasure, they were released from the ring and kept in a special area of the half-plane where the treasury was located.