[BT15-135] Nuova Shenron, Negative Energy Explosion

[Critical]
[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.
[Auto] If your Leader Card is a black "Shadow Dragon" card : When this card is played, play up to 1 "Towa, Resonance of Shadow" from your Drop Area with a marker on it.