Okay, if I use GetLocalPlayer() and make a unit really small and completely transparent so it's near impossible to either click or see it, would it cause any major mess ups?
Also, will this idea work against MANUAL attacking as opposed to auto attacking?
They may not be able to manually attack it but they will be able to auto-attack it, since it is still attack-able. The unit's size/alpha make no difference in-game aside from aesthetics.
What exactly are ya trying to do, though? Maybe I can be a little more help.
Tide-Arc Ephemera, you should know (just for reference) that setting a unit's alpha does not make it more difficult for the unit to be selected, however setting his size does.