Briarskin
Enchantment - Aura (c)
Enchant Creature
Enchanted Creature has +4/+4.
You may cast Briarskin from your graveyard for

Hmm, common green aura.
Creature gets protection from artifacts?
Something based on how creatures get larger in colder temperatures? That seems rare.
Gigantothermy is a little easier to pull off. Scientific name is a good excuse for some Academy flavour text too. Sounds prosnow, maybe pro red and blue or even pro instant/sorcery- wait I got this. Just got to think common.

Gigantothermy
Enchantment - Aura
Enchant creature
Enchanted creature gets +2/+2 and gains trample.
Natural laws of surface-volume relation enable larger animals to better regulate body temperature in extreme climates. Ergo, animals in hot and cold climates grow much larger.
Lale Bilik, Author- Compendium of Natural Life

Man, trample and +2/+2's actually pretty swingy. Upping the mana cost to 4 as a fix and so it gets to the player doing the creatures+auras deck.

Cloak of Winter

Enchantment – Aura (C)

Enchant permanent
Enchanted permanent has hexproof.

The people of Frostwynd renounced their spyglasses and maps long ago, for no cartographer could ever pierce the endless blanket of snow.

Predatory Instinct
Enchantment - Aura
Enchant Creature
Enchanted creature gets +2/+2 and must be blocked if able.
Whenever an enchantment enters the battlefield under your control, you may return ~ from your graveyard to your hand.
I AM NOT GOOD AT WRITING FLAVOR TEXT

Bleh.

Silly is back? Come rejoin us in Play by Post! There's a new Resistance game starting with three more slots open!

~SE++

Earthly Strength -
Enchantment - Aura
Enchant Creature
Enchanted creature gets +2/+2.

I come and go.

Stalking Vines
Enchantment - Aura
Enchant creature
When ~ enters the battlefield, draw a card.
whenever enchanted creature attacks you or a planeswalker you control, put a green 0/1 Plant creature token onto the battlefield blocking it.
It's hard to escape the eyes of a forest.

Untamed Fury
Enchantment - Aura
Enchant creature
When ~ enters the battlefield, draw a card.
Enchanted creature gets +1/+1 and loses all abilities.
Nature has enough brawn to consider brains a luxury.

Chameleon's Venom
Enchantment - Aura
Enchant Creature
Enchanted Creature gains hexproof and deathtouch.

I don't get to be on the fancy list? Also, why does Mown get two spots?

Mown. After all, his is good enough for two spots.

New and improved post, now with 50% less Mown!

I think I'm just voting for Confused. 3elegant5me

Shazzeh's list included the submission I made from my tablet, I updated it with flavor text and styling while he wrote the list, I asked him to update it and Shazzeh messed up somewhere along the way.

CKY.

Can I vote for two things? Both Mown and CKY have pretty good cards.

Mown - That's not common.
Cato - Read above.
Echo - Too cheap for the effect. Effectively 1 mana near universal removal.

I vote CKY

Echo's enchants an artifact or enchantment, not a permanent, if that affects your opinion at all.

Actually, yes. Not hitting creatures is a big deal powerwise. Still seems uncommon to me though.