who attacked the elves black clover

The elves who were attacked in Black Clover are believed to have been killed by members of the Eye of the Midnight Sun, a group of magic users who seek to overthrow the Clover Kingdom and establish their own rule. The Eye of the Midnight Sun is led by a powerful wizard named Patry, who has gained a significant following among the people of the Clover Kingdom. The elves were attacked as part of the Eye of the Midnight Sun's plan to gain control of the kingdom and its magic.