Okay, then the elemental and the wolf are immediately out: no matter how you paint them, they will still stand out from the setting. Let's have the stripper from your drawing, because almost all the characteristics and abilities of unicorns suit her in meaning (living, divine, child of light, aura of resistance, blinding) except for "large creature". If we could put her on someone... oh, exactly! On a white tiger, that's a great idea!
PS: Emerald warrior/Emerald knight - a unit from Earth Perfect Balance (one of the three proposed army options for the Haven faction for Heroes of Might and Magic VII).
Блистает там воздушностью прогалин.
Но между кедров, полных тишиной,
Расщелина по склону ниспадала.
О, никогда под бледною луной
Так пышен не был тот уют лесной...