Line Breaker Feat

You smash through your enemies, clearing the way for your allies.

Prerequisite: 4th level

• Ability Score Increase. Increase your Strength or Constitution by 1, to a maximum of 20.
• Heavy Impacts. When you push a creature, if the creatures movement is stopped early by another creature, object, or terrain, they take 1d4 bludgeoning damage for each 5 feet moved before the collision.
• Gain the Might Impact special attack (below).

Mighty Impact - Active Abillity (Attack)

• When you take the Attack action on your turn, you can replace one of your turns by slamming an enemy backwards. The target must make a Strength saving throw. On failure, it takes 2d6 + your Strength modifier damae and is pushed 15 feet away from you. On a success, it takes half as much damage and is pushed 5 feet away from you. The distance the target is pushed is reduced by 5 feet for every size larger than you it is. The number of d6 damage dice increases by one when your proficieny bonus increases (with the total number of d6 equaling your proficieny bonus).

Once you use this feature, you cannot use it again until you complete a short long rest.
Source: KCLL, page 184

Active Martial Feat Save DC:

• Any time an active martial feat requires a saving throw, the DC is 8 + your Strength or Dexterity modifier (your choice) + your proficiency bonus.