[Theory] There will only be ONE more Nature Transformation.

[Silverblade]

I thought Earth + Wind = Gaara's Sand

Combining Wind with Earth would create erosion
That's how sand is created. But it could be similar to Oonoki's Dust Release...

 

[BlacLord™]

I thought Earth + Wind = Gaara's Sand

Combining Wind with Earth would create erosion
That's how sand is created. But it could be similar to Oonoki's Dust Release...

Wind + Earth = Sand
Imo

Gaara's sand isn't a Nature, it's ordinary sand stuffed in a gourd, then controlled manually via Wind chakra/automatically by his mother's love...