They will take after one or the other parent, but not both.
This is drawn from Races of Faerun, page 112, in its section on Planetouched (which is, per 3.x, what Genasi are).
The offspring of two planetouched is always a planetouched. Mixed-heritage planetouched of this sort take after one or the other parent (seemingly equal chances) but carry the traits ...
This is a buffed version of the Tabaxi, with significant unintended consequences.
This race is exceedingly similar to the vanilla Tabaxi race, with some improvements.
+2 Dex, +1 Cha
+2 Dex, +1 Wis
30 feet walking, 20 feet climbing
40 feet walking, 30 feet climbing
Feline Agility (Primeval Surge)
Yes (no ...
They likely have an equal chance to take after either parent, although mixed genasi are known to exist.
In nearly every source where they have appeared since their origin in AD&D Planescape sourcebooks in the 90s, the genasi are of one of four elements, with no mention of what happens if two different types were to interbreed. However, there are a few ...
A typical dark tiefling must eat and sleep
A tiefling (Monster Manual 209–10) who possesses the dark template (Tome of Magic 161) and who is on the Plane of Shadow has the type and subtype outsider (native). The same dark tiefling when on any other plane has the type and subtypes outsider (extraplanar, native). "Unlike true outsiders, native outsiders ...
Only those with an ancestry trait
Since the feat doesn't explicitly say that the first listed weapons (i.e. the battleaxe, pick, and warhammer) are Dwarf weapons, then there is no RAW reason to assume they are Dwarf weapons. So only those with the appropriate ancestry trait are reduced from Advanced->Martial or Martial->Simple (for purposes of ...
It reflects lore already established in AD&D 2nd edition.
PHBR8 The Complete Book of Elves (1992), p. 37-39, describes that elves "do not feel the effects of age as humans know them". However, this mainly describes their appearance. It notes that they still suffer aging effects when they reach middle age. Page 38:
At the age of 175, elves ...
It's not game-breaking, but it's a bit much.
Let's look at the kinds of builds that might seek this thing.
Lets you wield a shortbow and a shield. That's... not actually particularly meaningful for almost anyone. The people who might reasonably wield a shortbow won't naturally have shield proficiency, and wont' generally be inclined to take it.
Lets you ...
It's got too much customization. Play testing will be required to accurately evaluate.
From the Age line, it is clear that this is a Human Variant race. The official Human variant has +1 to two ability scores (player choice) and a Feat (player choice), along with Medium size, Common language, 30 ft speed (all three are standard and will be ignored ...
First you have to understand that being native to a plane and having the Native subtype are two different things. Every creature is native to a plane, but only Outsiders native to the Material Plane have the Native subtype.
Native subtype, Monster Manual p.312:
A subtype applied only to outsiders. [...] Creatures with this subtype are native to the ...