Empower: Flying and Warcry this turn.
Card sounds may differ from in-game as they get updated.
Empower - Does something when you play a power card.
Flying - Flying units can only be blocked by other flying units, but can block ground units normally. They can also be directly attacked by Killer units and Relic Weapons.
Warcry - Each time a unit or Relic Weapon with Warcry attacks, it grants a permanent bonus to the top-most unit or weapon in your deck. Even if it's a few cards down, you'll get to stack up the bonuses on it over multiple turns.
Pledge - On your first turn, a card with Pledge can be played as a Sigil.