Shell Shock (move)
From the Super Mario Wiki
Shell Shock is the twelfth captain command in the Minion Quest: The Search for Bowser mode of Mario & Luigi: Superstar Saga + Bowser's Minions. It costs four CP to use. When used, the captain will retreat into their shell and spin in a spiral fashion, damaging many of the opposing squad members. Captain Koopa Troopa and Corporal Paraplonk are the only ones that can use it.