Hey guys my new campaigns is about this group of warriors called the seven elementals.

( also im thinking all the elementals can combine there power to make the life element)

Right now the seven are

Fire

Wind

Earth

Water

Shadow

Light

Lightning

What do u guys think of this also in the camp u find out there is a eight

Aether/Sky/Space/Void: The eighth element - often called "Aether" or "Ether" - tends to be more abstract than the other seven elements in that it has no clear physical manifestation. It can be depicted simply as pure energy with no properties, or as the power underlying the other seven elements

If you made it 8, then you could tie it into the Winds of Magic.

Light

Fire

Shadow

Air (or Aether)

Spirit

Wood

Earth (or Metal)

and ... um ... Animal

Well there is inevitably going to be a captain planet joke made somewhere. As for the X number of warriors bit, some recommended viewing:

http://tvtropes.org/pmwiki/pmwiki.php/Main/TheMagnificentSevenSamurai

Useful stop for whenever you are planning a campaign to avoid the cliche' pit falls.

I would really like to avoid the captain planet power rangers team of fighters thing lol