If I'm a Battlerager barbarian Battlerager barbarian (from Sword Coast Adventurer's GuideSword Coast Adventurer's Guide, p. 121) and make 3 attacks on my turn while using Reckless Attack and raging, do I get 5 temporary HP total, or 5 temp HP per attack (15 HP total)?
The latter seems a bit high to be able to get per round combined with resistances.