overgeeked
Open-World Sandbox
The name "genasi" is a WotC creation, but the idea of half-elemental isn't. Pick a different name and you're good.Genasi may be a wotc creation, but Goliath is from the bible.
Goliath is the name of a character from that book which is well into the public domain at this point. Attaching it to a half-giant is a bit iffy. Calling your half-giant race...say...a half-giant is not going to cause you trouble.