Rage Shenron, Power of Darkness

[Blocker] [Counter:Attack] Negate the attack and play this card in Rest Mode. [Permanent] If there are 7 or more black "Shadow Dragon" cards in your Drop Area, reduce the energy cost of this card in your hand by 2. [Auto] If your Leader Card is a "Shadow Dragon" card : When this card is played from your hand or discarded by a "Shadow Dragon" card's skill, you may look at the top card of your deck; if it's a black "Shadow Dragon" card you may add it to your hand, otherwise place it at the bottom of your deck.