Daunting Slash

From Dragon Quest Wiki

Weakening Wallop is a skill introduced Dragon Quest Monsters: Joker. It costs 4 MP. The user attacks an enemy and reduces the enemy's attack to 1/4.

Dragon Quest Monsters: Joker

Weakening Wallop can be learned from:

Dragon Quest Monsters: Joker 2

Weakening Wallop can be learned from all the skills it could be previously, though All-Rounder now requires 20 points, and Defender requires 66 points.