I need to make a reliable random timer that powers a redstone wire and that is as small as possible. It should send about a pulse every second or half second, but obviously be slightly varied. It needs to never burn out (or fix itself when it burns out) and automatically turn on when the server starts up. I have tried to use a blink device, but I have found that those are very unreliable and are often predictable.
The reason I need to make this is so that a player cannot go up to a wire of mine that is flashing, figure out the flash pattern, and create their own timer that just links into the original and fools my original. If I had a randomly pulsing wire like the one I need, my circuit could detect when the redstone wire was messed with.