In a campaign I'm playing in, a fellow player is asserting that the Aasimar alternate racial ability Deathless Spirit stacks with itself, so that if, for example, he were to have a necromancy spell cast on him that was a negative energy death effect, he would get a +6 bonus on the save: +2 against necromancy, +2 against negative energy, and +2 against death effects.
Something seems off about this to me, since it's all from the same source, but I know racial bonuses do stack, and the only potentially relevant instance in the PF rules (as opposed to 3.5 rules) I can find is that untyped bonuses from the same source don't stack. But this isn't untyped, it's a racial bonus. My gut says it should just be a +2 bonus, my friend and fellow player is saying it would (in the example above) be a +6 bonus.
I have a hard time imagining this or a similar situation hasn't come up before, but I can't find it.