Killing Mage
A shadow mage who is good at using murderous energy to create phantoms is a killing mage.
When wearing the Shadow of Killing, the wizard himself will be severely damaged. Killing enemies in the process will greatly increase their destructive power, and the increase will be proportional to the number of people killed.
Detonate the Shadow of Killing, and everything within its reach becomes extremely destructive and vulnerable. When two attributes conflict with each other, the former is superior to the latter.