The offspring of a Half-elemental, and something else, these planetouched
creatures embody a small portion of their elemental heritage. Genasi come in
4 varieties, each associated with an Elemental Plane.
Many Genasi have some form of appearence that helps place their elemental
lineage, little things that if one knows what they are looking for, may
identify an elemental ancestor.
Genasi priests may apply to any non-race specific faith which matches their
alignment so long as it does not contradict their elemental origins.
Race-specific deities are Lloth, Moradin, Corellon, Gruumsh, Garl, and
Yondalla.
The most obviously contradictory choices would be fire for Umberlee and water
for Chauntea.
Unless a planetouched character's traits are overtly obvious or they have
made it known, you should not roleplay as automatically knowing their
race/heritage. Rather they are just odd looking humans. One should also
consider whether they have a mask, hood, or armour that would further obscure
their features.