User blog comment:Wolfdragon Rex/Devil Fruits/@comment-1949750-20111216152908/@comment-4080028-20120104210851

Might wanna be careful with which element you choose though. We've had discussions over periodic element DFs in the past; mostly concerning DFs like an Oxygen Oxygen Fruit when there's already an air-based Logia on this site, as well as one or two other wind-based Paramecias.

When using periodic elements, try to tread with caution. That's the best advice I can give.