pukunui
Legend
As I mentioned above, orcs had something similar to Relentless Endurance during the playtest. That's undoubtedly where the half-orc trait came from. It ultimately got dropped from the orc in the MM but not from the half-orc in the PHB.I'm disappointed it didn't have one of Relentless Endurance or Savage Attack.
EDIT: Here's the trait I'm talking about:
Relentless: If an attack reduces the orc to 0 hit points or fewer but doesn't kill it outright, it is not knocked unconscious or killed as a result until the end of its next turn, provided it still has 0 hit points or fewer.
I vaguely recall the devs talking about why they swapped it out for the Aggressive trait instead but I can't remember exactly what was said.