"The black dice in your battery armament can be used at medium range. This effect applies only while attacking the rear hull zone of a ship."
Rules Clarification Edit
This ship can initiate an attack against the rear hull zone of an enemy ship at medium range even if it does not have red or blue dice in its armament.
FAQ Version 4.1.1; 2018/04/23
The effect of this Upgrade Card triggers during Attack Step 2: "Roll Attack Dice"
The Insidious title has been created for Star Wars: Armada.