Tieflings are generally descended from Asmodeus (and have the regular traits), but those not might exhibit different qualities ("Tiefling Variants" sidebar).
Tiefling Variants:
Appearance
Feral (different ability scores)
Devil's Tongue
Hellfire
Winged
Sorry. There is no specific area for Eilistraee or Vhaeraun other than them appear on the Drow Pantheon chart. I have not read too much in depth yet though, so... maybe...?
Eilistraee has Light and Nature domains, Vhaeraun has Trickery. Hope that helps...
Bladesinger is a wizard arcane tradition. Main power is Bladesong, gives bonus to AC, speed, concentration saving throws, and Acrobatics checks. You get Extra Attack later on as well.
Bladesinging for wizards is pretty cool, something I would want to try immediately. Also, a lot of expansion for the tiefling, four new racial trait variants (one replaces ability score modifiers, the other three can replace Infernal Legacy).
Sign Off...
I wanted to thank everyone for their interest and help on the thread, we made the top Hot Topics of the Week. I apologize if we did not get to everyone's questions, but hopefully there are a lot more people with the book now and you get your chance to get your own soon.
I will...
Yes, 1st-level evocation, choose acid, cold, fire, lightning, poison, or thunder damage. Requires a 50 gp diamond as a (non-consumed) material component.
Tymora has Trickery as a suggested domain. Cleric Domains grant class features, not the specific deity worshipped. Trickery Domain features were previously listed twice.
Touch, choose from four options (disadvantage for one ability, disadvantage on attacks against you, save or do nothing for a turn, deal extra damage to cursed target).
1st level spell slot is 2 sorcery points, 4th level slot is 6 sorcery points. Twinned Spell only works on spells that target one creature and doesn't have a range of self.