From Dragon Quest Wiki

Co-Kacrack is a monster-exclusive pep power found in the eleventh game. When cast, it pierces foes with bitterly cold spears of ice.


Dragon Quest XI: Echoes of an Elusive Age[edit]

Co-Kacrack is unusual for a pep spell in that in requires two different species to be cast, being the Mermaniac and Merking. It deals around 180 Ice damage to whole party