Synergizes very well with Limbo, as his Banish can protect the decoy from harm allowing a guaranteed activation of the augment.
Enemies will surround and target the decoy if left out in the open. This is especially difficult to utilize against Infested who will rush the decoy and destroy it in a just a few attacks. This makes the augment rather counter intuitive since if Loki himself takes fatal damage, and assuming his decoy is still alive, he will be teleported into a group of enemies with only a tiny bit of health.
Because of this, it's recommended to place the decoy in a hidden place far from enemies.