I think the guardian can be done with triggers, but everything else must be player 161.
Here are some things to know:
• Must not have a mac for it to work.
• Must not have preplaced vision of p161.
• The unit for Player 161 to "officially" cloak will be the last player 161 unit placed. Remember, player 161 can cloak/uncloak one of any specific unit that can normally never cloak in the game. Player 161 can cloak any units that can normally cloak with an arbiter.