Fire: Open ~ control and make fire, fireproof
Electricity: taken by darkhero26 ~ summon electricity, "shock"proof
Light: taken by hermeszeus33 ~ can become invisible, can alter how light it is
Air: Open ~ control and make wind, fly
Sound: Open ~ can see sound waves, throw theirs and others voices
Gravity: Open ~ can control gravity, slow down a fall, CAN NOT FLY!!!
Earth: Open ~ can control rocks, dirt, trees, vines, etc. can make earth, rocks
Grass: Open ~ can grow plants faster than Earth, can control plants
Steel: taken by commandereating14 ~ can control ores or anything with metal, especially steel
Water: taken by emeraldbasilisk235 ~ can control water, make water
Snow: taken by skyheart45 ~ can freeze water, make it snow, can conjure ice
Love (Feelings): Open ~ make people fall in love, sense love, see feelings
Physic: taken by climbingbasketball392 ~ read minds, send thoughts to other people, has mind-sight, can control things (0.1 out of 100% chance of controlling humans), teleport any distance
Time: taken by admiralwings24 ~ can control time, can time travel
You don't need 2 people for Time but you can. One can speed it up, the other can slow it down.
Shadow (dark/night): Taken by jadeblizzard88 ~ can control shaadows, the night/moon, HOSTILE or hostile/neutral mobs (except ender dragon and wither. they'll only help if they get a good deal)
Mystical (exception element): taken by lavenderdress32 ~ can summon passive/friendly neutral mobs (wolves, etc.), teleport SHORT DISTANCES ONLY (maybe up to 30 blocks??? and you can only do it every 10 minutes???), fall longer distances without getting hurt as much (a looooong fall can still hurt you), turn into a wolf only
WE HAVE ONLY ONE SPOT LEFT!!! I WILL MAKE EXCEPTIONS TO HAVE 8 LEFT SINCE I HAVE MORE THAN TEN ELEMENTS! TILL THEN, ONE LEFT!