Lucifer, Demon King of Darkness (BT29-052) [Fearsome Rivals]

Product Details

[Auto] [Spirit Boost 1] When this card is played, draw 1 card, then choose up to 1 of your opponent’s Unisons and remove 2 markers from it.
[Activate:Main] [Limit 1] G, if your Leader is green and you have 3 or more energy : Play this card from your hand.
[Activate:Main] [Limit 1] If you have "Sleeping Princess" with 7 or more markers on it in your Battle Area : Choose up to 1 of your opponent’s Battle Cards and KO it, and this card gets +10000 power and [Double Strike] for the turn.