Autumn's fall

You were born in Autumn blessed by sprits ice and fire mingling together in the beginning of Autumn. Being born like this your hair is usually a red ,orange ,yellow , and sometimes a fading green or sometimes all of them. on your skin there is a birth mark in the shape of something Autumn related like a falling leaf , a pumpkin , a or a fading tree. with this subclass you will have better control over the elements of fire and ice, making  spells of the fire and ice will be more powerful. being blessed by fairy's woodland animals trust you more naturally, and finally you will be able to bring forth the power of the world around you . 

Fairy blessing

you've been blessed by two fairy's one giving you proficiency in animal handling if your background or race gives you animal handling you have expertise instead , the other fairy gives you proficiency in medicine or if your race or background gives you medicine you have expertise instead    

Autumn chill and heat

magic flows through you body giving you resistance to the elements  

Elemental Affinity

Starting at 6th level, when you cast a spell that deals damage of type of fire or cold, you can add your Charisma modifier to one damage roll of that spell. At the same time you can spend 1 sorcery point to ad your Charisma modifier to another damage roll you can do this a number of times equal to half your level rounded up  

Autumn winds

At 14th level, you gain the ability to summon Autumn winds, gaining a flying speed equal to your current speed. the steps you take while flying have leaves appear were you step  

Autumn's fury

Beginning at 18th level you can bring forth the power of Autumn so when you cast a spell that does fire or cold damage you may spend sorcery points equal to the spells level to instantly cast the spell again but the opposite element. for example if you cast fireball you may spend 3 sorcery points to cast it again but cold damage instead