Star Wars: A Flicker of Hope
You use the Force to cloud an enemy’s mind, making it harder for the enemy to see its target.
Target: One enemy within 12 squares of you and in your line of sight that just made an attack roll.
Make a Use the Force Check. Compare the result to the target’s Will Defense. If the check result equals or exceeds the target’s Will Defense, the target takes a -5 penalty on the attack roll. If the target misses with the attack, you can choose to make the target reroll the attack against another creature adjacent to it; this attack is also at a -5 penalty.
Special: You may spend a Force Point when you activate this power to apply the penalty to all of the target’s attack rolls made until the start of its next turn.
Source: Legacy Era Campaign Guide, p. 54.