Peace - Dawn Bringer - Celestia
Hope - Morning Star - Luna
Faith - Oracle - Faust
Heroism - Dragons Soul - Spike
Kindness - Sirens Song - Fluttershy
Honesty - Bucking Bronco - Applejack
Loyalty - Wings of Liberty - Rainbow Dash
Laughter - Party Balloon - Pinkie
Generosity - Platinum Diamond - Rarity
Friendship - Arcane Crown - Twilight
Elements of Harmony- top halve (Elements of Hostility- Bottom halve)
Patience (Haste), Wisdom (Ignorance), Peace (War), Humbleness (Pride), Heroism(Wickedness), Generosity (Greed), Laughter (Stress), Friendship (Loneliness), Loyalty (Betrayal), Kindness (Cruelty), Honesty (Deceit), Protection (Danger), Hope (Despair), Faith (Doubt), Love (Fear), Forgiveness (Wrath), Tenacity (Laziness), Happiness (Sadness), Order (Chaos), Modesty (Vanity), Chastity (Lust), Luck (Misfortune), Life (Death), Courage (Coward), and Temperance(Gluttony).
To find a Hostility Element just look across from its positive, like a mirror is in the middle.
Example - Temperance(Green Leaf), and Gluttony (Strawberry) are opposites.
Honesty (Orange Apple) and Deceit (Green holed heart) are opposites.
...I think your list forgot Spike's element. And artifact.
I see it in the picture...
There are no proper adjectives to describe this.
+ Party Balloon has a life all of its own compare to other elements
+ increased Pinkie sense
+ Laughter Magic (Its kind of a positive version of Chaos Magic Still random though)
+ All this is base on the wielders ability to spread laughter
the world might end because of too much party.