These are all boosters in power there are the elemental crystals beware if you choose the opposite side you are on, you turn to that side. If your Xiaolin and choose to raise Heylin, you turn Heylin or visa versa. Unless you use a certain shen gong wu reversing mirror and the elemental amulet.
Red crystal: Increases fire power in Heylin or Xiaolin sides.
Other Crystals: Are for all other elements have same effect.
Elemental Amulet: With reversing mirror can turn you back to whatever side you were if the effects of turning Xiaolin or Heylin you do not wish to have.
I will post the legendary Shen Gong Wu that I made up soon....