Secrets of Power

Ambush (When you play this unit, it may attack an enemy unit.)

Shadow Crawler

Overwhelm (When attacking an enemy unit, deal excess damage to the opponent's base.)

Republic War Walker

The first time this unit would take damage each phase, prevent that damage.

Umbaran Mobile Cannon

Jump to Lightspeed

Sentinel (Units in this arena can't attack your non-Sentinel units or your base.)

Perimeter AT-RT

This unit costs 1 less to play for each damaged ground unit.
Overwhelm (When attacking an enemy unit, deal excess damage to the opponent's base.)

AT-DP Occupier

Twilight of the Republic

Restore 3 (When this unit attacks, heal 3 damage from your base.) 
When Defeated: Create 2 Clone Trooper tokens.

AT-TE Vanguard

Exploit 2 (While playing this card, defeat up to 2 units you control. This card costs 2 less for each unit defeated this way.) 
Ambush (When you play this unit, it may ready and attack an enemy unit.)

Baktoid Spider Droid

If you control 3 or more units, this unit costs 1 less to play.

Republic Attack Pod

Exploit 2 (While playing this card, defeat up to 2 units you control. This card costs 2 less for each unit defeated this way.) 
When Played: Exhaust an enemy ground unit.

Tri-Droid Suppressor

Spark of Rebellion

AT-AT Suppressor

AT-ST

SENTINEL (Units in this arena can't attack your non-Sentinel units or your base.) 
When Played: Give an Experience token to each friendly damaged unit.

Academy Defense Walker

When this unit attacks and defeats a unit: You may deal the excess damage from this attack to an enemy ground unit.

Blizzard Assault AT-AT

GRIT (This unit gets +1/+0 for each damage on it.)
When Played: If a base has 15 or more damage on it, ready this unit.

Guerilla Attack Pod

While you control another VEHICLE unit, this unit gains AMBUSH. (After you play this unit, it may ready and attack an enemy unit.)

Frontier AT-RT

When Played/On Attack: Look at the top card of your deck. Either draw that card or discard it and heal 3 damage from your base.