Spike, a Challenging Warrior (BT22-104) [Critical Blow]

Product Details

[Permanent] If there are 3 or more cards under a "Fortuneteller Baba's Palace" in your Battle Area, reduce the energy cost of this card in your hand by YYY.
[Auto][Limit 1] Declare 1 number : When this card is played from your hand, reveal the top card of your opponent's deck, then flip the revealed card over and place it at the top of their deck. Additionally, if the revealed card's energy cost is the same as the declared number, reduce the specified cost of a "Devilmite Beam" in your Z-Deck by Y for the turn.