[sm0ke]

Dude you are such an idiot... Test things for yourself. Then you'll realize how stupid you are. Firefield scrolls are way faster than recall, so if you see someone invis you can cast a firefield scroll on their tile. As of now though, it doesn't make them fizzle when it hits them before their recall finishes. You can easily hit them invis since firefield scrolls are faster. Easily. This suggestion has nothing to do with killing you at your guild house, get over yourself.
I hate to have to call you names, but you seriously bring it upon yourself.
Nobody uses wall object type as a macro, that's just retarded. Good try though.

Actually you're wrong everyone who uses injection and has a guild door uses wall objects as a macro, and you didn't read what I said even if they were implanted there's nothing stopping them from moving from the direction of the firefield and then using the potion so this won't do anything. All this would do is give you a chance to guess where this person is invis on tiles which isn't an accurate fix. Honestly you need to stop acting like it's a competition or so hostile were both trying to find a fix just like everyone else and because i've disagreed and brought up some points with how it can beneficial to your guild or players in your guild who would use it.