Especially good with X cards, which won't actually have their energy cost modified and will play for the same amount twice. Flexible way to increase the output of the cards in your hand right now, which can double as a way to combo with specific cards in your deck in longer fights to win against tougher enemies.
Especially good with Danse Macabre or Intimidating Helmet as this both increases card cost and activates multiple times. Broadly useful for doubling scaling cards such as powers or cards that benefit from repeat plays like No Escape.
Deal 13 damage. Permanently increase this card's damage by 3. Exhaust.
Deal damage equal to the enemy's Doom. Exhaust.
Add Replay to a card in your Hand. It costs an extra . Exhaust.
Gain 7 Block. Add a copy of this card into your Discard Pile.
Osty deals 6 damage. Deals additional damage equal to Osty's current HP.