It would be important to know if we are allowed to create a mono element card or one that works especially well with other elements.
You can create a mono-element, synergy card, or any mix in between and thereof. (I'm not really so nitpicking on the synergy part at this point, seeing that the two requirements might be more difficult than others would think, so you can do it either way)
GG, when did you go through the cards and realize that those letters weren't used?
http://elementscommunity.org/forum/index.php/topic,12666.0.html^^^ - Try that.
We can change the name, mechanics, etc of our card anytime before the deadline right?
Correct. But remember that if the requirements aren't satisfied by the deadline, your submission is disqualified (granted, 14 days SHOULD be enough to find something... ^^; )
and 
have the same number of permanents, why do you have one but not the other? O_o
Other cards would have made the requirements possibly easier to make (not to mention, I kind of feel that the "Other" school is already given enough permanents (weapons and SoG)) as it is, so I decided to not include them this round. Also, considering that cards of the elements are much more important than the ones to the 'Other' school, I thought it'd be better to follow Essence's guideline of 'filling out' the elements that have less card totals overall, despite any quality/quantity issues that could arise.
EDIT: 
, 
, 
, and 
have less permanents than both and , 
has the same number... (Looks like you forgot wings.) (for reference, exempting pillars and pends, 
, 
, and 
have 2, while 
, , and have 4)
For spells, it looks like you have <3 spells (giving a -1 exemption for alchemy spells), in which case , with only gravity pull and momentum, should be there too 
(reference: 1 spell for , 2 spells for and *, 3 spells for and , and 4 spells for fire)
and creatures... I think I'll leave that alone (for reference, exempting dragons, nymphs, and flown weapons, has 6, has 5, , , and have 4, and has 3)
* was given a -1 bonus for spells because its alchemy card is a permanent
Pretty much. I left Darkness, Water, Entropy, and Earth outside the competition as they all have 16 cards (Water has 17).
If you EXCLUDE weapons, pillars, AND pendulums (which all elements have -exactly- one of the according type, no matter how you slice it... alchemy spells differ because of Air's), these are how the elements would look:
(Mind Gate + Phase Shield) --- (Fractal, Lightning, Twin Universe, Quintessence)
(Wings, Fog Shield, Unstable Gas) --- (Shockwave, Thunderstorm, Flying Weapon)
(Dusk Mantle, Eclipse) --- (Steal, Drain Life, Nightmare, Liquid Shadow)
(Bone Wall, Graveyard, Skull Shield) --- (Aflatoxin, Poison, Plague)
(Titanium Shield) --- (Quicksand, Protect Artifact, Heavy Armor, Basilisk Blood, Stone Skin)
(Dissipation Shield) --- (Mutate, Chaos Seed, Pandemonium, Nova, Antimatter, Butterfly Effect)
(Fire Buckler) --- (Immolation, Rain of Fire, Rage Potion, Fire Lance, Explosion)
(Gravity Shield) --- (Gravity Pull, Momentum, Black Hole)
(Thorn Carapace, Jade Shield, Empathic Bond) --- (Adrenaline, Heal)
(Hope, Solar Shield, Reflective Shield) --- (Holy Flash, Miracle, Blessing, Luciferin)
(Procrastination, Golden Hourglass, Sundial) --- (Rewind, Precognition)
(Permafrost Shield, Flooding) --- (Ice Lance, Freeze, Nymph's Tears, Purify)
I included alchemy spells to the mix, so my organization strategy was:
-Find elements with the lowest total of cards
-Figure out which totals were lower for them: spells for permanents
-Separate the elements accordingly
-And other element that doesn't have an equal amount of spells and permanents (Air), place into creature making
...I hope that satisfies your curiosity. ^^;;;;
