One of the Droid Character unit cards in the your discard pile gets "Pay X-2 Force, where X is this unit's printed build cost Meditate" until end of turn. Play only during your build step.
Pay 2 Force Meditate
Keywords
Meditate
Meditate: An isolated effect activated during a POP chance or your build step that means, "You may play this card from your discard pile without paying the printed cost. Play only during a POP chance or during your build step. When this card would be discarded, remove it from the game instead." Meditate can only be activated when the card is in your discard pile. Paying the Meditate activation cost means you don't pay the normal printed cost of the card.