R7 Astromech Card
The R7-series astromech droid was an astromech droid produced by Industrial Automaton during the Galactic Civil War. The R7-series was designed specifically for use with the Rebel Alliance/New Republic E-wing escort starfighter.
Card Text/Abilities Source[]
Once per round when defending, if you have a target lock on the attacker, you may spend the target lock to choose any or all attack dice. The attacker must reroll the chosen dice.