Source: Legends of Runeterra - Dark Tides of Bilgewater

Armor (medium or heavy), rare

This jagged armor is made of castaway hooks and barbs. While wearing this armor, if you take the Attack action on your turn, you can use a bonus action to try to shove a creature within 5 feet of you. The shoved creature takes 1d8 piercing damage, in addition to either being knocked prone or pushed.