Fiendish Sorcery: Tiefling sorcerers with the Abyssal or Infernal bloodlines treat their Charisma scores as 2 points higher for all sorcerer class abilities.
There is no indication in the book that this effect only applies to 'mongrel' tieflings, or those who stem from the 'appropriate' fiend type.
By rules, neither a Rakshasa-spawn nor a Daemon-spawn have any problems in getting this bonus when claiming an Infernal Bloodline... while, for retaining the effect for their own bloodline, the Rakshasa-spawn has to take the Improved Fiendish Sorcery Feat, while the Daemon-spawn is out of luck altogether.
Umm... huh? Can anyone help me with this type of logic? Am I the only one who thinks that for those 'pure-blooded' Tieflings, their heritage Bloodline would be the one they are most closely tied to?
Edit: Baleeted myself.
I see the problem here--the "other evil outsider" clause suggests that a tiefling might have no ties to an abyssal or infernal creature. Thus, if they take abyssal or infernal bloodline, why should they get a bonus? If they took a bloodline matching their "other evil outsider", no bonus for them.
It's weird, but RAWWIMW. Feel free to house rule it, as always.
Are you asking if a Tiefling Sorcerer with the abyssal or infernal bloodline, who took the Fiendish Heritage feat to get the Rakshasa-Spawn variant heritage, can benefit from the Fiendish Sorcery (Ex) ability?
Or are you asking of a Tiefling must have a similar bloodline and variant heritage? (meaning no Devil-Spawn with Abyssal bloodline)
Since the whole thing is dependent on DM whim, it's pretty much whatever the DM decides. If your ancestry has some weird mix of demons and devils, then no big deal. Maybe one affects your physical body (Devil spawn) causing your attributes to change, while the other affects your mind (Abyssal bloodline) causing your magical powers to manifest differently.
The answer is simple: If they choose a bloodline that is related to their heritage, they get the bonus. If not, they do not get the bonus. I'd also be happy to let a beastbrood tiefling use a slightly modified serpentine bloodline (familiar would be a cat instead of a snake, for instance) or devil bloodline as long as all references to serpents or devils are replaced with rakshasa equivalent language.
