From the Super Mario Wiki
Super Counter is a first officer command used by Iggy in Mario & Luigi: Bowser's Inside Story + Bowser Jr.'s Journey. It is Iggy's first command, the second being Lightning. It costs four CP to use. Once activated, Iggy will ask Bowser Jr. who attacked him last. Bowser Jr. will respond by pointing out the last few enemies who attacked him. Iggy will then become enraged and attack the last few enemies who attacked Bowser Jr. with high damage. Additionally, after the command is used, Iggy will get a POW boost due to still being angry. If Bowser Jr. has not been attacked yet, Iggy does not attack anyone, and the CP remains used.