Leaping Attacker (5e Feat)
From D&D Wiki
You gain the following benefits:
You can add your Dexterity or Strength modifier (your choice) to your long jump distance.
When you make a long jump immediately before attacking a creature, you have advantage on your first attack roll. If you hit with that first attack, you can impose one of the following effects on the creature, provided the creature is no more than one size larger than you:
- The creature takes extra damage equal to your Strength or Dexterity modifier.
- The creature can't take reactions until the end of your next turn.
- The creature must succeed on a Strength (Athletics) check (if you attacked using your Strength modifier) or a Dexterity (Acrobatics) check (if you attacked using your Dexterity modifier) against your attack roll or be knocked prone. Making this check does not use the creature's action or reaction.
You may only gain the benefits of this feat once every turn.