Body slam

you are fairly larger and heavier than most, you have lured to use that to your advantage 

• As an attack you can preform a Body slam using constitution modifier to hit, dealing 1d6+constitution modifier amount of bludgeoning damage, if the character is heavier than 500 pounds the damage die increases to a d10,  if the Body slam successfully hits a target of your size or smaller it has to succeed on a strength saving throw DC= 8 + constitution modifier + proficiency bones or be pinned as long as you are ageist to it or be shoved 15 feet back 
• you have disadvantage on dexterity (acrobatics) and dexterity (stealth) skill checks