Show a circle of range X around yourself.

[Talon`]

So pretty much, I'm looking for a mod that will allow me to make a circle of radius X around a target or around myself. This would be useful if I was playing against someone like witchslayer so I can make sure to stay outside of 500 range so that I can't get graveyarded etc. Also would be useful if I was chasing someone and needed to know if they would be in range of my nuke soon, etc. Wouldn't need to be anything fancy, just a circle around my hero with adjustable radius.

Thanks in advance.