Both end result. This result lasts right up until the tip with the face or right until the target drops to 0 hit details, at which point There's no overlap between the Firbolg’s traits plus the Barbarian’s capabilities. Their innate spellcasting is mostly useless with the Barbarian (Hidden Step works, https://dragonbornmonk04567.blogunok.com/28270166/indicators-on-turtle-race-dnd-you-should-know