Secrets of Power

When Played: You may reveal an event from your hand. If you do, deal 1 damage to a unit.

ISB Agent

Shadows of the Galaxy

When Played: You may return an Underworld card from your discard pile to your hand.

Street Gang Recruiter

Spark of Rebellion

Overconfident

Action [{exhaust}]: Play an IMPERIAL unit from your hand (paying its cost). It enters play ready. Each opponent may ready a unit.

Admiral Ozzel, Overconfident

Saboteur (When this unit attacks, ignore Sentinel and defeat the defender's Shields.) 
When you play another aggression card: You may deal 1 damage to a base.

Fighters For Freedom

Death Star Prison Warden

Sentinel (Units in this arena can't attack your non-sentinel units or your base.)
When Played: Reveal up to 4 Vigilance cards from your hand. For each card revealed this way, give an Experience token to this unit.

Lieutenant Childsen, Death Star Prison Warden

When Played: Name a card. While this unit is in play, opponents can't play the named card.