In my map, I am trying to make it so when you unload a unit, it'll move a scarab of a Computer player to Current player. I've got the transferring down, but I cannot get it to be given to the Current player. I have a trigger that says when you bring a scarab to the location the characters at, it'll be giving to the Current player. I can't tell if the scarab is mines though because on the map it doesn't have a color. Another note that might be useful, I have the Reavers attacking a unit that is blocked off by a Dark Templar, but it still should work the same way correct?
Another problem is when the scarab is transferred to me, it just flies towards the top left. Anyone know how I can overcome these problems?

HERE's a topic that pretty much answeres everything.

Sure blocking the scarab works fine.

Scarabs Map
You can't give scarabs to another player, the only option is to have a computer player (that is in enemy status with the possible targets) control the scarab(s). If you don't want random, there is the Set Generic command...

The only problem with using a computer is that the computer can sometimes splash you.