Earth Potential
Earth Potential give the wielder control over land, soil, sand, minerals and metals. Some can wield plants life, although this is less common.
Air Potential
Air Potential give the wielder control over winds, breath and some atmospheric phenomena. Some can create storms, hurricanes and tornadoes.
Water Potential
Water Potential give the wielder control over water in most forms, including liquid and ice. Some can control water on a vapor level.
Fire Potential
Fire Potential has not existed in humans since it was snuffed out on Planet One. It is against Commonwealth law to produce fire, even from a match. All fire usage requires Leadership approval, permission that is almost never granted.