Alicorn "OC"

It’s pretty much rule number 1 or so of the fandom: Do not, DO NOT, DO NOT create an Alicorn OC.
 
However, since the number of total Alicorns in the show has increased, and each of them seem to have some kind of aspect they’re in charge of - Celestia: The Sun/The Day, Luna: The Moon/The Night, Cadance: Love, Twilight: Friendship/Magic - let’s put aside that ‘rule’ for the moment and experiment.
 
If you suddenly found yourself to be a prince/princess of Equestria, what would you be the alicorn of? What would you do with your newly-granted power and/or abilities?

Unless you give them a plausible background(such as an ruler of another nation and such) and don’t look over the top, you might be fine. And they better be drawn well.
 
There are always gonna be haters of just about anything, though.

Answering the question in OP:
 
The alicorn of rocks. All those rock farmers need a god after all!

From what I’ve seen, the best alicorn OCs are those without a background story.
 

 
Just the design.

@Grieffon  
If they’re well drawn and not straight from the Pony Creator.

@SeraphimDawn  
And also have a non-eye-piercing color scheme that deviates away from the realm of red and black.
 
Also, I’m gonna withhold answering the main question there myself as I mostly just wanna see what everyone else comes up with.

The seasons, I guess. And weather in general.

@Grieffon  
That one looks like it could be an Alien Pony Queen.

I’d be the alicorn of guard ponies.  
Failing that, the alicorn of cacti.

It will be great to have one

@Hakar  
I have a special female alicorn OC named Mystic Foresight. No official princess title though