Retrograde

Retrograde (ナンバーリバース) is an ability that appears in Kingdom Hearts Chain of Memories. It reverses the values of all cards, changing 1 to 9, 2 to 8, and so forth. Cards with a value of 0 are not affected.

Mechanics
Retrograde is an enemy card effect that costs 30 CP to add to the deck and lasts for one reload.

Kingdom Hearts Chain of Memories

 * The Powerwild enemy card has Retrograde as its effect.
 * The Black Fungus enemy card can randomly activate Retrograde.
 * The Darkside enemy card can mimic an enemy's Retrograde.