How to make a move usable only once per battle?

I recently created a move that I'd like to only have usable once per battle. Thing is I don't know how. I feel like it's really easy to do but I'm just overlooking something. Any help would be much appreciated.

Are you okay with using scripts? Yanfly has a skill restriction script that can be found here:

https://github.com/Archeia/YEARepo/tree/master/Battle

And details of the script can be found here:

http://yanflychannel.wordpress.com/rmvxa/gameplay-scripts/skill-restrictions/

Okay, that worked but there's one more problem (sorry for putting this in randomly) but the screen keeps going into full screen ever since I got the script and I can't seem to stop it. I just want the original little screen.

I think you can do this without any custom script.

Try this: In database, create a new state and add a "Seal Skill" feature and pick the said skill. Then add an "Add State" effect to the said skill and pick the one you created to seal the skill. The skill should be temporarily disabled when used once.

If you're using Yanfly's script you also have installed the Ace Engine, haven't you? This script also changes the screen size, search the lines and edit the values.

I just did. The values are 640 x 416. That's just optimal widescreen. I don't know why it keeps going fullscreen.

EDIT: Oh how silly of me, I chose Launch in Full Screen by accident last night. Was up past midnight and had no idea what I was doing. Thanks for all of the help :)