proficient crusher

you have become proficient in your crushing attacks learning the mastery of the push back

• Bonus - Choose +1 Strength or Dexterity
•  you can knockback when you do bludgeoning damage to a number of creatures back equal to your Strength or Dexterity modifier
• crashing hit- once per turn, you can push creatures into walls or other surfaces for 1d4 with a strength saving throw of 15 to take half this gets improved at higher levels (level 3 1d4, level 7 2d4, level 14 3d4, level 18 4d4) (may not hit other creatures)
• you gain proficiency with bludgeoning improvised weapons
• stored momentum- if a target is a subject to knockback coming from this feat or the crusher feat, you may store it to combo it with other knockback sending them flying in any direction at the end of your turn (you may not push them into a occupied space unless matched with crashing hit and it would only do crashing hit damage unless dm says otherwise) this is done at will and if not done so all momentum would be lost at the end of turn

this feat has the same size limits and knockback follow same rules as the crusher feat