Dominance Upgrade (Dominator 3-4)
Existing
When another character attacks an enemy with a mark, the effect is activated with n% efficiency
Remake: Chance to inflict corruption when attacking marked enemies
(Probability is proportional to the enemy's maximum health, talent level, and damage dealt)
Unless it's a low-damage weapon (Amiya's basic weapon or speed-enhanced mountain breaker), it should have an average of 1-2% chance.
Red 3rd subclass
can apply a ranged attack to the enemy with a special action, and you can grant useful abilities such as knockback as a talent.
Other abilities are lacking compared to the existing subclasses, but the terrain and traps can be used more effectively than other characters.