D&D General What would be a good half-elf feature that is combat focused?

[Minigiant]

In 4E, half-elves were able to learn 1 at-wills power from any class that they could use as an encounter power. While at-wills were largely equal, equivalent to 5E Cantrips if they got to add casting modifier to damage, it did boost their versatility

Free Weapon Mastery or Cantrip

 

[the Jester]

I always liked the power to bump a d20 up by 1. I have used it as a power or magic item and the players always found a way to use it. Mostly missed an attack or save and they scramble to look at the PC sheet and finally another player leans over and says they give +1.

This is perfect. Thank you.